Travis execution inline with webpack/webpack

[joshwiens]

Bring karma-webpack travis execution inline with webpack core

• Plan & author tests ( help wanted )
• Add linting
• Add coverage generation / reporting via codecov.io

[joshwiens]

@MikaAK - https://codecov.io/gh/webpack/karma-webpack needs to be enabled by a member with write access.

[MikaAK]

@d3viant0ne it's enabled now!

[joshwiens]

After a bit of discussion with @MikaAK we are going to got with a more standard approach to structure for this loader. The example can easily be moved to documentation and tests should exist in test

Author tests
As far as test authoring goes, my week is a mess. Will if you have any bandwidth this week, this would be a good place to put it. Odds of me having time to get to this until this coming weekend is slim. Even if you can get a few in place, that would be an improvement as 20% coverage is better than undefined <--- lol

CI Validation & Code Coverage
I have all the CI & Coverage work done just need npm test to actually do something meaningful.

ES6 via Babel and peace out to Async
As far as the ES6 / Babel move goes, Mika will be putting that in place.

//cc @goldhand