added a link to git.

Added "Learn git branching" to git.
Update content.json
Merge pull request #140 from gigerbytes/gh-pages

Add leafletjs, then : d3, prereq: javascript, d3; Added organization.txt file
commented out donations
adding shaye howe link to bento box
Merge pull request #142 from gigerbytes/gh-pages

added tags based on organization.txt
Merge pull request #145 from davidhan527/gh-pages

I like it - merged.
Merge pull request #141 from kxy/gh-pages

add learnShell to Shell and learnPHP to PHP
Merge pull request #133 from rajanand/patch-1

This is a good resource - merged
removed broken links on html and fixed  operands
Removed paypal, ribbon objects
Fixed json format errors
Fixed css links and formatting
Fixed json errors
Update index.html

Participation in https://thedaywefightback.org/
removed twfb script
remove twitterbootstrapmvc
elasticsearch next
Added mandrill
updated sendgrid links