Automate development environment configuration

Wrote a bootstrap script for configuring the local environment, and a
Vagrantfile for running a VM dev environment. Updated the README to explain
these changes.
Merged in pacebl/pybot/devenv (pull request #3)

Automate development environment configuration
fix for redditinfo (since it no longer publishes upvote/downvote numbers) and small bot.py fix for if the server doesn't have an motd.. we should still join
Merge branch 'master' of bitbucket.org:hlmtre/pybot