imperialCommander.cc:206:19: error: no matching function for call to ‘getline(std::__cxx11::string&)’
     getline(option);
                   ^
In file included from /usr/include/c++/5/string:53:0,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from imperialCommander.cc:2:
/usr/include/c++/5/bits/basic_string.tcc:1513:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, _CharT)
     getline(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/5/bits/basic_string.tcc:1513:5: note:   template argument deduction/substitution failed:
imperialCommander.cc:206:19: note:   ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
     getline(option);
                   ^
In file included from /usr/include/c++/5/string:52:0,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from imperialCommander.cc:2:
/usr/include/c++/5/bits/basic_string.h:5210:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
     getline(basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/5/bits/basic_string.h:5210:5: note:   template argument deduction/substitution failed:
imperialCommander.cc:206:19: note:   ‘std::__cxx11::string {aka std::__cxx11::basic_string<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
     getline(option);