Minor phone number formatting issue

[mlevin2]

North American phone numbers should be one of these:

• (NPA) NXX-XXXX
• NPA-NXX-XXXX

The data returned looks like this:

{ "phone": "(912)-464-7839" }

So if you use parentheses, don't put a dash after them. Either format is fine, but don't combine them :-)

I submitted pull request #150 for this

Update: also fixed it so that neither NPA nor NXX can start with a 0 or 1

[keitharm]

Changes merged in https://github.com/RandomAPI/Randomuser.me-Node/pull/150