Added a providence version

Added a talk for Brown 4/7/2014
Revert "Added a providence version"

This reverts commit 2c5274952187427767b74a1efb7e7b21cb9c9af5.
Merge branch 'gh-pages'
Added brown talk

Added talk given at Brown
Merge pull request #4 from bcaffo/master

Merging brown talk