Removed external dependency on figlet by making it use pyfiglet

Hey man,

I love Figlet. :) I was thinking of creating your package before I knew yours existed, hehe. When I saw you were relying on figlet itself, I thought it would be even cooler if I just brought in the pyfiglet module and got it working the same without the external dependency... so I did.

While I was at it, I also added cleanup of trailing whitespace by default, though it can be disabled with a specific user preference.

Hope you likey.
Cheers,

   -- Alan