Add sample REST server and "server" task

This is roughly equivalent to commit
"50b09a99bc8d7131fac182908b2c4df39d060a8b" in the original Roostagram
repository, which can be found here:
https://github.com/bocoup-education/roost-chicago-2014-app/tree/50b09a99bc8d7131fac182908b2c4df39d060a8b

Implemented the sample javascript REST server used in the original
project. I would prefer to add a WebAPI project to keep with the whole
.Net implementation, but maybe later.

I couldn't get sqlite3 to install properly, I had to use NPM outside VS
to install it globally, then move the folder from the computers
node-packages folder to the projects node-packages folder. Your mileage
may vary.