Rails-error

|11:11:05| ~ bundle install
Fetching source index from https://rubygems.org/
Using rake 10.3.2
Using Ascii85 1.0.2
Using i18n 0.6.9
Using multi_json 1.8.4
Using activesupport 3.2.14
Using builder 3.0.4
Using activemodel 3.2.14
Using erubis 2.7.0
Using journey 1.0.4
Using rack 1.4.5
Using rack-cache 1.2
Using rack-test 0.6.2
Using hike 1.2.3
Using tilt 1.4.1
Using sprockets 2.2.2
Using actionpack 3.2.14
Using mime-types 1.25.1
Using polyglot 0.3.3
Using treetop 1.4.15
Using mail 2.5.4
Using actionmailer 3.2.14
Using arel 3.0.3
Using tzinfo 0.3.38
Using activerecord 3.2.14
Using activeresource 3.2.14
Using acts_as_commentable 4.0.1
Using addressable 2.3.5
Using afm 0.2.0
Using awesome_print 1.2.0
Using bcrypt-ruby 3.1.2
Using coderay 1.1.0
Using better_errors 1.0.1
Using debug_inspector 0.0.2
Using binding_of_caller 0.7.2
Using birthday 0.2.0
Using rack-ssl 1.3.3
Using json 1.8.1
Using rdoc 3.12.2
Using thor 0.18.1
Using railties 3.2.14
Using bootstrap-datepicker-rails 1.1.1.11
Using fastercsv 1.5.5
Using haml 4.1.0.beta.1
Using highline 1.6.20
Using sexp_processor 4.4.1
Using ruby_parser 3.2.2
Using ruby2ruby 2.0.7
Using sass 3.2.14
Using temple 0.6.7
Using slim 2.0.2
Using terminal-table 1.4.5
Using brakeman 2.3.1
Using browser 0.2.1
Using uniform_notifier 1.4.0
Using bullet 4.6.0
Using columnize 0.8.9
Using debugger-linecache 1.2.0
Using byebug 2.7.0
Using callsite 0.0.11
Using cancan 1.6.10
Using mini_portile 0.5.2


Your user account isn't allowed to install to the system Rubygems.
You can cancel this installation and run:

    bundle install --path vendor/bundle

to install the gems into ./vendor/bundle/, or you can enter your password
and install the bundled gems to Rubygems using sudo.

Password:

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
Extracting libxml2-2.8.0.tar.gz into tmp/x86_64-apple-darwin13.2.0/ports/libxml2/2.8.0... OK
Running 'configure' for libxml2 2.8.0... OK
Running 'compile' for libxml2 2.8.0... OK
Running 'install' for libxml2 2.8.0... OK
Activating libxml2 2.8.0 (from /private/var/folders/mp/tl8cpc_j0vd504t3npnqxzl00000gn/T/bundler20140627-949-55sx95/nokogiri-1.6.1/gems/nokogiri-1.6.1/ports/x86_64-apple-darwin13.2.0/libxml2/2.8.0)...
Extracting libxslt-1.1.26.tar.gz into tmp/x86_64-apple-darwin13.2.0/ports/libxslt/1.1.26... OK
Running 'configure' for libxslt 1.1.26... OK
Running 'compile' for libxslt 1.1.26... OK
Running 'install' for libxslt 1.1.26... OK
Activating libxslt 1.1.26 (from /private/var/folders/mp/tl8cpc_j0vd504t3npnqxzl00000gn/T/bundler20140627-949-55sx95/nokogiri-1.6.1/gems/nokogiri-1.6.1/ports/x86_64-apple-darwin13.2.0/libxslt/1.1.26)...
checking for libxml/parser.h... yes
checking for libxslt/xslt.h... yes
checking for libexslt/exslt.h... yes
checking for iconv_open() in iconv.h... no
checking for iconv_open() in -liconv... yes
checking for xmlParseDoc() in -lxml2... no
-----
libxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
    --with-iconv-dir
    --without-iconv-dir
    --with-iconv-include
    --without-iconv-include=${iconv-dir}/include
    --with-iconv-lib
    --without-iconv-lib=${iconv-dir}/lib
    --with-xml2-dir
    --without-xml2-dir
    --with-xml2-include
    --without-xml2-include=${xml2-dir}/include
    --with-xml2-lib
    --without-xml2-lib=${xml2-dir}/lib
    --with-xslt-dir
    --without-xslt-dir
    --with-xslt-include
    --without-xslt-include=${xslt-dir}/include
    --with-xslt-lib
    --without-xslt-lib=${xslt-dir}/lib
    --with-libxslt-config
    --without-libxslt-config
    --with-pkg-config
    --without-pkg-config
    --with-libxml-2.0-config
    --without-libxml-2.0-config
    --with-libiconv-config
    --without-libiconv-config
    --with-iconvlib
    --without-iconvlib
    --with-xml2lib
    --without-xml2lib

extconf failed, exit code 1

Gem files will remain installed in /var/folders/mp/tl8cpc_j0vd504t3npnqxzl00000gn/T/bundler20140627-949-55sx95/nokogiri-1.6.1/gems/nokogiri-1.6.1 for inspection.
Results logged to /var/folders/mp/tl8cpc_j0vd504t3npnqxzl00000gn/T/bundler20140627-949-55sx95/nokogiri-1.6.1/extensions/universal-darwin-13/2.0.0/nokogiri-1.6.1/gem_make.out
An error occurred while installing nokogiri (1.6.1), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.1'` succeeds before bundling.
|11:15:49| ~ sudo gem install nokogiri -v '1.6.1'
Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
Extracting libxml2-2.8.0.tar.gz into tmp/x86_64-apple-darwin13.2.0/ports/libxml2/2.8.0... OK
Running 'configure' for libxml2 2.8.0... OK
Running 'compile' for libxml2 2.8.0... OK
Running 'install' for libxml2 2.8.0... OK
Activating libxml2 2.8.0 (from /Library/Ruby/Gems/2.0.0/gems/nokogiri-1.6.1/ports/x86_64-apple-darwin13.2.0/libxml2/2.8.0)...
Extracting libxslt-1.1.26.tar.gz into tmp/x86_64-apple-darwin13.2.0/ports/libxslt/1.1.26... OK
Running 'configure' for libxslt 1.1.26... OK
Running 'compile' for libxslt 1.1.26... OK
Running 'install' for libxslt 1.1.26... OK
Activating libxslt 1.1.26 (from /Library/Ruby/Gems/2.0.0/gems/nokogiri-1.6.1/ports/x86_64-apple-darwin13.2.0/libxslt/1.1.26)...
checking for libxml/parser.h... yes
checking for libxslt/xslt.h... yes
checking for libexslt/exslt.h... yes
checking for iconv_open() in iconv.h... no
checking for iconv_open() in -liconv... yes
checking for xmlParseDoc() in -lxml2... no
-----
libxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
    --with-iconv-dir
    --without-iconv-dir
    --with-iconv-include
    --without-iconv-include=${iconv-dir}/include
    --with-iconv-lib
    --without-iconv-lib=${iconv-dir}/lib
    --with-xml2-dir
    --without-xml2-dir
    --with-xml2-include
    --without-xml2-include=${xml2-dir}/include
    --with-xml2-lib
    --without-xml2-lib=${xml2-dir}/lib
    --with-xslt-dir
    --without-xslt-dir
    --with-xslt-include
    --without-xslt-include=${xslt-dir}/include
    --with-xslt-lib
    --without-xslt-lib=${xslt-dir}/lib
    --with-libxslt-config
    --without-libxslt-config
    --with-pkg-config
    --without-pkg-config
    --with-libxml-2.0-config
    --without-libxml-2.0-config
    --with-libiconv-config
    --without-libiconv-config
    --with-iconvlib
    --without-iconvlib
    --with-xml2lib
    --without-xml2lib

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/nokogiri-1.6.1 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-13/2.0.0/nokogiri-1.6.1/gem_make.out