added test for remove_not_in
removed blank tests
merged master
explicitly scoping relation for am finders
added further protection for finder proxy
added back override find methods
fine, overriding the select method to fix everything
restricting attribute checking to hashes
reverted change for am_scoping
Merge pull request #21 from sportngin/test_all_the_things

Test all the things
Merge pull request #24 from sportngin/finder_proxy

explicitly scoping relation for am finders
merged master