datajam: update README with feedback, resolve naming conflict
Merge pull request #519 from mulby/gabe/datajam/rename-script

datajam: update README with feedback, resolve naming conflict
Move datajam script and readme files to datajam repo
Add "unset NO_PREREQ_INSTALL" call to lms and cms scripts, so that missing prereqs are installed by rake calls.
Merge pull request #522 from rocha/datajam

Move datajam script and readme files to datajam repo
Merge pull request #524 from edx/brian/add-unset-noprereq

Add "unset NO_PREREQ_INSTALL" call to lms and cms scripts
datajam: fix lack of dependency install when starting lms
Merge pull request #525 from mulby/gabe/datajam/update-vagrant-image

datajam: fix lack of dependency install when starting lms
datajam: ensure correct mongodb version
Merge pull request #529 from mulby/gabe/datajam/fix-mongo-overlap

datajam: ensure correct mongodb version