bundle install
Fetching gem metadata from https://rubygems.org/...........
Fetching gem metadata from https://rubygems.org/..
Resolving dependencies...
Enter your password to install the bundled RubyGems to your system:
Using addressable (2.3.8)
Using sass (3.4.15)
Using sassy-maps (0.4.0)
Using breakpoint (2.5.0)
Using chunky_png (1.3.4)
Using coderay (1.1.0)
Using multi_json (1.11.1)
Using compass-core (1.0.3)
Using compass-import-once (1.0.5)
Using rb-fsevent (0.9.5)
Installing ffi (1.9.9)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/include/ruby.hGem files will remain installed in /Users/Moe/.bundler/tmp/8353/gems/ffi-1.9.9 for inspection.
Results logged to /Users/Moe/.bundler/tmp/8353/gems/ffi-1.9.9/ext/ffi_c/gem_make.outAn error occurred while installing ffi (1.9.9), and Bundler cannot continue. Make sure that
gem install ffi -v '1.9.9'
succeeds before bundling.