Update README.md

Added my gem Abracadabra, which cleans up edit pages by allowing text to be clickable, which swaps the text in-place with a Rails compliant form.
Add Abstraction: Interactor.
Merge pull request #77 from Erol/interactor

Add Abstraction: Interactor.
HTML Parsing => HTML/XML Parsing
add Data Visualization section
Added: machinist gem
Added: Nesty gem
Added: logging related gems
Added: Railroady gem
Added: Erd gem
Add Jsonite
Merge pull request #80 from torokmark/master

Added: log section and other gems like nesty, railroady
Merge pull request #81 from stephencelis/patch-1

Add Jsonite
Add Abstraction: Light Service.
Merge pull request #82 from Erol/light-service

Add Abstraction: Light Service.
Capitalize HTTP
Added HappyMapper to HTML/XML Parsing
Added ROXML to HTML/XML Parsing
Add Date & Time Processing section
Added timecop to Testing