Merge pull request #1236 from ruchee/master

added some books about Linux/C/PHP/Rails
Removed "How to Design Faceted Search"

Link to a "buy now" page with no signs of free stuff
New version of "A Course in Machine Learning"

Updated url
Merge pull request #1237 from robschia/patch-1

Removed "How to Design Faceted Search"
Merge pull request #1238 from robschia/patch-2

New version of "A Course in Machine Learning"
Added Railscast resource for Ruby on Rails
Merge pull request #1242 from akshaymohite/master

Added Railscast resource for Ruby on Rails
Fixing invalid link to a Ruby resource
Re-ordering Ruby resources with official resources at top
Add a link to Programming and Programming Languages.
Merge pull request #1244 from jbranchaud/add-programming-and-programming-languages

Add a link to Programming and Programming Languages.
Add High Performance Browser Networking book.
Merge pull request #1245 from jbranchaud/add-high-perf-browser-networking

Add High Performance Browser Networking book.
Add Twitter Bootstrap 3 Succinctly.
Added MATLAB Course
Added latest Version of Bash Guide
Added CUDA Books and Subsection
Merge pull request #1246 from levibostian/succinctly-update

Add Twitter Bootstrap 3 Succinctly.
Added indentation for CUDA
Merge pull request #1247 from meetshah1995/master

Added Course for MATLAB, Book for Bash and CUDA