Used code block to make format more clear
Added: Rss section

Added: four rss related gems. (Feedjira, SimpleRss, Feed Normalizer, Ratom)
Fixed: typo
Merge pull request #63 from LuqiPan/improve-format-displaying

Used code block to make format more clear
Merge pull request #64 from torokmark/master

Added: Rss section
Added Main for to CLI section
Added Fabrication to Testing section
Added Authority to Authorization section
Added itunes_store_transporter to API Third-parts APIs section
Change "Rss" heading to "RSS"
Added Configuration section
Added childprocess and forkoff to Processes and Threads
Add WebMock to Testing
Add RR to Testing
Add Bacon to Testing
Add DataObjects to Database Drivers
Add mongo-ruby-driver to Database Drivers
Add moped to Database Drivers
Add Searchlogic to Search
Add Record Cache to Caching