Added a Phone Model

I created the phone model for recording incoming phone numbers. The
model has one attribute, number, a string whose format is limited to
start with a + and 1 followed by exactly 10 numeric characters.

I also had to do some setup for tests to get the model properly tested.
I created a basic `test.coffee` to load and initialize the tests.
Merge branch 'phone' into development
Merge branch 'development'