Separate 'present' method check into own method
Allow isset/offsetExists checks on 'present' methods
Add unit tests for new isset/offsetExists functionality
Merge branch 'make-isset-check-methods' of github.com:BenConstable/presenter into develop closes #25
cleaned up code from "check present methods in isset()" pull request
updated composer versions, including laravel 4.2
fixed typo and renamed method to be more verbose to once again prevent collisions with presenter names in rare occasions
refactored laravel integration to work with 4.2. closes #26