Twitter AutoAck'ing #10 phase 1, autotweet

Hi @tyler,

Ok the following
 * Adds a cred file which you should populate with details from a twitter account you want AutoAck to operate with.
 * rearranges the commands by alphabetical order
 * adds, tweet and autotweet commands
 * ONLY implements autotweet which essentially binds to the chosen Twitter account and auto ACK's replies to anyone who dares to tweet the chosen twitter account.

We still need to implement one time ad hoc tweets... but tht is for tomorrow.