Simpler Main method

Got to delete two methods in Dictionary.hs
I think this is better because the dictionary doesn't do anything with trees.
Removed Tree imports to Dictionary
Added a faster trie implementation

It's still waayyyy slower than python and c though :(
Adding LICENCE and FastTrie

Forgot to add these
Merge pull request #2 from theicfire/fast_trie

Fast Trie implementation added