Merge pull request #18 from richseviora/iteration3b

Iteration3b
Merge pull request #19 from richseviora/Yung'sBranch

Yung's branch
Mailer is now working.
Mailer now working
Updated Mailer code in pledges_controller
Fixed syntax on email
Merge pull request #20 from richseviora/mchau

Mailer is now working.
Merge branch 'master' into Yung'sBranch