Move pta tool outside of project

[melito]

I'm new to go and have been using pta to run my tests.

Sadly I'm not using the PrettyTest library to do so.

To me it would make sense to move the pta tool outside of the pretty test project.
That way any issues that arise within it can be fixed / addressed in that project.

[wari]

https://github.com/hatoishi/guard-gotest and it works very well for me. Works with the standard tests, and PrettyTest. But of course, you'd then need to add ruby to your tool-chain 👅