V4 -- Update for template v2.0.1-5

[stylesuxx]

Primarly needed to update the way, the postcss related stuff is attached since it is attached to the webpack config, which has changed.

[coveralls]

Coverage increased (+0.04%) to 96.19% when pulling e4ef5bd on stylesuxx:master into b581e5b on react-webpack-generators:master.

[sthzg]

@stylesuxx changes are looking good. does this fix the PostCSS part completely (from the template side)? Then I'd merge and publish the next pre-release. Otherwise I'd merge and wait a little before publishing.

[stylesuxx]

I have not tested the postcss part yet, but I can do that in the evening and report back - if I did not completely mess up the webpack config it should still be working - at least the tests pass regarding the attachment of the postcss functionality. I remember you mentioned that something was not working properly - can you link me to an issue?

[sthzg]

That is a good question. AFAIK in the V4 generator the PostCSS part was reported to be buggy. I couldn't find a Github issue, but this comment serves as an indicator that there were problems. Maybe @weblogixx still has a bit of context on that. Otherwise I will also test a setup and see what it does/does not do.

I will merge this to 2.x now so that it can be tested against the template w/ the necessary modifications in this PR.

[sthzg]

FYI: I tested an installation w/ PostCSS enabled and filed an error on this issue #307.