Merge pull request #2 from ckrailo/master

November news
Adding December issue
Update issues/10_december2012.md

Fixed Evan Light broken link
Adding February issue.
Add general welcome slide
Merge pull request #3 from BennyBooBooBoo/patch-1

Update issues/10_december2012.md
Merge pull request #4 from markmcspadden/patch-1

Add general welcome slide
updating with info about rails security patches.
Adding March 2013 issue.