Merge pull request #1 from xlii/master

updating readme
small refactory that also fix some issues with weird from addresses
added configurable setting for server port number

now it is possible define what is the port number the client will use
to connect to the XMPP server.
added installation info to the readme
updated readme

updated name according with the new "ROBO-TiTO" name.
fixed some english mistakes. And improved the content, just a little
bit.
added/updated info provided altogether with the credential.rb.example file
Merge pull request #1 from formigarafa/master

Update README, settings information and support for redefine destination server port