Add mongodb and monk as dependencies
Add mongodb and monk modules
Start MongoDB client before node server and kill them at the end

* Store process PID using $! variable
* node cannot be executed with "exec" anymore
Ignore MongoDB data folder
Use data from MongoDB to return Books instead of mocked data

* Connect to mongodb using monk
* Return everything from bookcollection on /books route
Merge pull request #1 from brunops/add-mongodb

Add mongodb