Merge pull request #342 from maieul/master

retroingénirie binaire->c
Adding Java EE 7 Tutorial
Merge pull request #343 from slhrkc/patch-1

Adding Java EE 7 Tutorial
Updating the list to include free Salesforce/Force.com books

Salesforce developers actually have a great resource on Developer Force - http://developer.force.com/ - but I wanted to add some of the books Salesforce has released to this list to share with everyone. Salesforce's languages are Apex (similar to Java) and Visualforce (similar to HTML)
Merge pull request #344 from jessealtman/patch-1

Updating the list to include free Salesforce/Force.com books
Fixing a broken link in the Index to properly link to the section below for Force.com
Merge pull request #345 from jessealtman/patch-2

Fixing a broken link in the Index to properly link to the section below ...
Update free-programming-books.md

added content for MATLAB programming
Merge pull request #346 from toddatkinsiii/patch-1

Update free-programming-books.md
retroingénierie python