Rename "word" as "string"
Define .gitignore
Update dependencies
Implement fn generator

Sort of trivial but useful when fuzzing.
Implement NaN generator

Another trivial one that is handy for fuzzing.
Merge branch 'master' of github.com:bebraw/generators.js

Redefined number generator semantics while at it. Now it returns a value
always. No need to generate generators as that just complicates things.
Tidy up
Bump version