Changes to Connect to MongoDB

oadastream.js now implements super agent to connect to MongoDB

express.js is suppose to run and wait for HTTP requests but doesn't
necessarily work or is needed yet
Function HTTP resquests

express.js has the support to handle HTTP requests.

express.test.js can execute requests of post, put, get, and delete and
check whether they were successful.

README is updated with a more clear goal, progress of the goal, and
dependencies used in express.js and express.test.js