Merge pull request #133 from bexarcreativeinc/master

Fix belongsTo() method to be compatible with Laravel 4.1.
Support now is for 4.1 and above
Made Capsule instance available globally via static methods.
Merge pull request #141 from PeterSchumacher/master

Made Capsule instance available globally via static methods. Closes #138
fixing typo in docs. closes #137
Ignoring composer stuff
Code style and doc
Including a validateUniques method, just like we currently have updateUniques. closes #140