add new dependencies
first pass at RSSContentStream

	modified:   lib/rss_content_stream.coffee
First pass at fetch RSS performer.

 On branch master
	new file:   lib/fetch_rss_performer.coffee
Start of testing

 On branch master
	new file:   test/helpers.coffee
	new file:   test/rss_content_stream_test.coffee
Update README

	modified:   README.md