Merge pull request #1 from cegrif01/master

added a condition in the find method to handle http 500 requests. Also, ...
changed static variable visibility
Merge branch 'master' of github.com:Indatus/ActiveResource
Typo and grammatical fixes.
Added formatting.
Proper guard clauses.
Formatting.
Merge pull request #2 from jasonmccreary/readme

README tweaks.
Merge pull request #3 from jasonmccreary/refactoring

Refactoring
Adding ActiveResource.__unset
Merge pull request #4 from troyharvey/unset-magic-method

Adding ActiveResource.__unset