Twitch Implementation

You may need to install `XmlHttpRequest` via the following:
`npm install xmlhttprequest`

### Supports the following Twitch API functions
+ Getting status
+ Getting game
+ Getting followers
+ Getting viewers

The follower and viewer data are fetched automatically by the server on a set interval. Peak viewer count and the last follower are reported as well.

### And supports the following (assuming the config has a valid OAuth token for the desired channel from ReesayBot)
+ Updating status
+ Updating game
Git isn't acknowledging the whitespace change from tabs to spaces, but hopefully they'll get pulled in during a different CR change.