Merge pull request #103 from torokmark/master

Moved pdf related gems under Pdf
add ActiveAttr and Hashie to Core Extensions
add PSD.rb to Imagery
Added rubber
Merge pull request #104 from onkarb/master

Added rubber
Add Testing: Cutest.
Add Database Driver: Redic.
Merge pull request #106 from Erol/redic

Add Database Driver: Redic.
Merge pull request #105 from Erol/cutest

Add Testing: Cutest.
add logo
Merge branch 'master' of github.com:markets/awesome-ruby