Got reporter to output to specified file by hacking away at a couple of npm modules

- Included a utils/ folder to put 'reporter-file' and 'intercept-stdout' files
- intercept-stdout hijacks stdout.write() and lets us replace it with a different function, which allows us to write the report to a file by tricking Mocha into thinking that stdout.write() will just paste to the normal process.stdout var.
- Edited 'reporter-file' to include 'intercept-stdout' so that we can get output from Mocha without having to edit any core files
- Will be submitting a PR to 'reporter-file' to see if my methods are OK