Merge tag '0.2.0' into develop

Filling the gaps in 0.1.*

Added a LOT of tests, including all the ones from the original gulp to ensure my wrapper doesn't break anything.
Added some additional bugfixes, most notably some that influenced the behaviour of the plugin when dealing with tasks that contained/depended on erroneous files
Made gulp.dirs enumerable
Adjusted test task so it only outputs the fields that are interesting to us
Updated package.json so it does not include a main entry. This should ensure that the default value is used in tests
Test for values of gulp.name and gulp.main to ensure defaults are used correctly
Test for values in gulp.dirs to ensure defaults are used correctly
update
Fixed issue where bundle was loaded from package.json of gulp-loader instead of the using package
Fixed reading of package.json
Merge branch 'feature/correct-options-handling' into develop
Bumped version number
Merge branch 'release/0.2.1'

Conflicts:
	README.md
Adjusted travis badge