Aded descriptions for HTTPPostSink and HTTPGetStreamSource operator and ports #22
minor updates to the description. #22
Added a sample for basic authentication properties. Updated description of authenticationFile attribute
Added spldoc comment for httpresponse type. #22
fixed a relative path issue in description #22
more clarification on the property file path #22
addressed comment about "part"
Merge pull request #28 from rohitsw/master

Added descriptions for HTTPPost and HTTPGetStreamSouce operators. Fixes #22