changes to JsonDataHandler - Fixes for the bugs. And added new test
sample for Summary and a new sample for Get Contacts in a tabular
format.
Adding Unit Tests for JsonDataHandler and Mock Feed.
Samples for Testing JsonDataHandler Functionality. Slight modifications
for getAsNumber and passing the mock feed.
Merge branch 'master' into PS-JS-JsonDataHandler
removing MockFeed file as I have added the mock feeds in the sample
files itself.
Review comments implemented. Added another sample for testing
getAsNumber with exhaustive span.
Merge pull request #198 from VimalDhupar/JsonDataHandlerChanges

Json data handler changes