minor changes to data_source docstring
Merge branch 'master' of https://github.com/clarkfitzg/freshdata
Updating changes made yesterday in code review with Clark
Updating changes made yesterday in code review with Clark
Deleted unnecessary available_sources function and added key_code to
data_source docstring
Merge pull request #7 from dmeyer3691/master

Merging changes made during code review on 6/18/14