Merge branch 'release-0.1.6' into develop

* release-0.1.6:
  chore: bump version to 0.1.6
chore: update and cleanup dependencies
docs: add nodei.co badge to README.md
chore: exclude index.js from coverage report
chore: render coverage report only as html

```
--report <report-type>
     report type, one of html, lcov, lcovonly, none, defaults to lcov
     (= lcov.info + HTML)
```
chore: bump version to 0.1.7
Merge branch 'release-0.1.7'

* release-0.1.7:

    * chore: bump version to 0.1.7
    * chore: render coverage report only as html
    * chore: exclude index.js from coverage report
    * docs: add nodei.co badge to README.md
    * chore: update and cleanup dependencies