tr8n:init rake task creates language rules with null keywords

[drewchandler]

https://github.com/berk/tr8n/blob/master/app/models/tr8n/language.rb#L140
This creates a bunch of language rules without keywords, which seem to be unusable and cause errors like this:

Invalid rule name one for transform token {count| play}

[berk]

Drew, you are uncovering new features of Tr8n :) Good job. I am still working on it. I will fix it soon. The new updates will support nested decoration tokens and condensed translations.