Merge pull request #3 from massix/master

Sync
Merge pull request #4 from massix/master

Sync
Merge pull request #5 from massix/master

Continue implementing the InputGameScene
Update README.md
Rename source folder
Migrate to Podfiles, fix includes
Fix remaining things
Modify README.md
Shared scheme by default (it will be used by travis)
Add .travis.yml file
Install CocoaPods gem before pod installing
Specify workspace, scheme and sdk in .yml file
Default to rvm 1.9.3
Merge with master