Remove core kohana modules - should be submodules
Adding core kohana modules back as submodules
Adding .travis.yml and composer.json

Copy composer.json from oauth branch
Fixing case on class requires
Fix case of model names in FeatureContext and PHPUnit tests
Porting PHP 5.4 Log_Writer fixes

Porting the fix from here: https://github.com/kohana/core/pull/338