Added tests for #find
Added tests for #limit
Added tests for #offset
Added tests for #pluck
Added tests for #uniq
Added tests for #destroy_all
Added tests for #empty? and #exists?
Added tests for #with_context
Added tests for #order and #reorder
Added tests for #except
Added tests for #where
Added tests for #find_by and #find_all_by
Merge pull request #14 from macfanatic/more-finder-tester

Add unit tests for relation methods