New: Added Admin page (fixes #30)

Fixes #30

Following are the changes made:

* Supports save and reload of config.
* Picks up the config with a higher priority as mentioned in the README.
* Runs with ```grunt admin```
* Uses react and coffeescript

Any suggestions on how to go about on the below points?

* Support of https ( Need certificates. Related to #58? )
* Restart of other servers on save. (Should ```example.coffee``` be made a module?)
* Graph ( depends on #10 )
I find it really odd that would be the case. I'll try to get rid of it on my own, if you can leave that comment there it will help me remember to give it a go. Browserify is only for converting server nodejs code to work client-side, that's its sole purpose.