Server up and running - gets and posts messages. 

Fixes #17 

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Messages specs/tests are commented out. 
  - Server tests with gulp-mocha have an issue at the moment where the server doesn't close out after completion
  - There's an outstanding issue on gulp-mocha that speaks to the problem we have:
  - https://github.com/sindresorhus/gulp-mocha/issues/54
  - I'll research and see what else we might be able to do about this. Perhaps another testing framework for gulp and the server?
Server should be able to render default index.html
Server should be able to handle get and post requests
Data is currently stored in a storage object on the app.js file
testindex.html was included in the client for my own testing and for the curious. We can remove it on the next pull request when everyone's on the same page.