Lesson 2 updated slides and materials
Merge branch 'master' of https://github.com/GA-BEWD-2014/BEWD-2014

Master updated by instructor.
updated slides for 5 and 6
add rails app for class
add rakefile
Merge branch 'master' of https://github.com/GA-BEWD-2014/BEWD-2014

Updating local copy
Update from upstream and add several in class exercises.