XD-2237 add python module for implementing processor
XD-2237 removed stray .pyc and __init.py
Merge branch 'XD-2237' of https://github.com/dturanski/spring-xd into dturanski-XD-2237
Merge branch 'dturanski-XD-2237'
Test cases asssociated with the commit validates Py code changes.
Ran through full test execution from this branch; test build successfully completed.
Merging to master.
Merge branch 'master' of https://github.com/spring-projects/spring-xd