Arabic number to words

[faisalr]

Hello

I made a new method called "ToArabicWords" in NumberToWordsExtension.

[MehdiK]

Thanks for the contribution. I have commented on a few bits that I think should be changed before I can pull this in.

[faisalr]

I fixed the pull request with something better than ambient culture, you can pull this in.

[MehdiK]

Thanks for the hard word and for taking the comments in. This is starting to look very exciting. Only two things:

• Please submit a new PR without the binaries as this one is a bit bulky. I am going to close this one hoping to get the new PR from you based on this one.
• Please change back to using current culture for consistency amongst localized methods. I also really liked when you implemented the arabic tests in the Localisation folder.