Merge pull request #40 from onkar-dhuri/2.2

Code Refactoring.
Merge pull request #41 from onkar-dhuri/2.2

Code refactoring and partial feature implementation -
Refatored code for Atom feed format writer in service so that we can support the Json format implementation.
Merge pull request #42 from shantanud/2.2

Re-factored code for Atom feed format writer in service so that we can sup...