Theme private messaging

Allows the bot to private message any user that comes in to the room
with the current theme ONLY if a theme has been set.  If the theme has
not been set or the theme mods are not installed nothing will happen
(tested these cases :)  ).
Just removing the two extra blank spaces from the prev commit on robot.js....
Added settheme, /theme, /notheme and added models/store to .gitignore.

Changes for setting and unsetting a rooms theme through the bot.
Merge pull request #13 from angryrancor/master

Changes for setting and unsetting a rooms theme through the bot.