Addressing problems with running code for Chapter 2 (Facebook) that involved not mapping through port 5000 for Flask and the inability to launch a web browser on the host machine if an IPython NB is running remotely. Mapped through port in Vagrantfile and added stderr output and source code comments to clarify what users should do in these circumstances.
Merge branch 'master' of https://github.com/ptwobrussell/Mining-the-Social-Web-2nd-Edition