Reorganized test_freshdata.py and made use of nose.tools assertions. Minor change to constructor of source class so that it includes default_params attribute
Added missing argument for assert_equal in requests test
Refactored to use more descriptive nose.tools assertions
Refactored to merge with upstream changes
Merge pull request #12 from dmeyer3691/master

Addresses issue #9, Refactoring of test_freshdata.py