Update the README with some rudimentary directions

[gregorypierce]

Updated the directions so that other people may have a slightly easier time getting it running if they are novices.

[HenrikJoreteg]

This is awesome, thank you @gregorypierce! One fix is that you don't have to explicitly type out all required dependencies. Instead of npm install x y z you can just do npm install from project root an it will check package.json for `dependencies