fix(adapter): fix windows json editing

The json parsing that we were using was overly complicated. This is much simpler and solves some of
the odd behavior that was happening on windows when installing and dealing with adapters.

Closes commitizen#42

fix(config): fixes incorrect deprecation notice

In certain scenarios a deprecation warning for czConfig was shown, even if the user had actually
correctly configured commitizen to use the config.commitizen key. This fixes that issue and improves
the warning in the deprecation notice to be more clear that it is specifically the repo (and not the
adapter or the cli) that is having issues.

Closes commitizen#50

Merge pull request commitizen#53 from tjoskar/feature/pre-compile

feat(compile): Precompile ES6 code

feat(config): use npm config object, deprecate czConfig

Npm is generous enough to give us a config object. We should use it. This change is not breaking but
sets up 3.0.0 to be breaking by adding a deprecation warning to any repos using the old style of
config. czConfig will be removed in 3.0.0. From now on, commitizen init now uses the new config as
its default. Adds additional tests and docs as well

Closes commitizen#30

Merge pull request commitizen#37 from d4rkr00t/stagged-fix

Use only file names when determining if the staging area is clean

feat(commit): enable githook output streaming

We needed a way to provide incremental progress to the cli as the commit exec command runs. We
needed to land a PR in gulp-git first. This has now landed. This implements an incremental feedback
using the emitData option and does a few dependency updates.

Closes commitizen#8 Closes commitizen#28 Closes commitizen#31 Closes commitizen#32 Closes commitizen#33

fix(build): fixes the travisCI build config

TravisCI needs to have the git config username set or it throws 'Please tell me who you are' errors.
This adds a dummy user to the git config.

Part of commitizen#28