A simpled TDD FizzBuzz

Uses composer, PHPUnit, and autoloading.
Created a twist on FizzBuzz by adding a third requirement with slightly different behavior

All multiples of 7 will add "bang" to the output depending on how many powers of 7 factor in
to that number.

The driver here will stop execution on 7^4.
Merge branch 'master' of github.com:ericpoe/TddFizzBuzz