Added some comments to homedics.js
Extract buildRegexp method from constructor
Added roman conversion map of c/q/f/l/x/v
Also create the dictionary of j/c/q/f
Return empty string if a dictionary of the letter doesn't exist
Cache a dictionary
Return null if passed roman string is an empty
Add Jp library
Moved custom library from spec/lib/ to spec/support/
Added spec for jp library