C:UsersM4LDocumentsex_projectsrorfirst_project>bundle install
Fetching source index from https://rubygems.org/
Could not verify the SSL certificate for https://rubygems.org/.
There is a chance you are experiencing a man-in-the-middle attack, but most
likely your system doesn't have the CA certificates needed for verification. For

information about OpenSSL certificates, see bit.ly/ruby-ssl. To connect without
using SSL, edit your Gemfile sources and change 'https' to 'http'.

set SSL_CERT_FILE = c:railsinstallercacert.pem