Update sinon dependency
Merge pull request #18 from ZDroid/update-deps

Update sinon dependency
Fix typo in README
Improve HTML and Markdown syntax
* Use consistent 2 space indent.
* Improve comments.
* Avoid <br> usage when it isn't needed.
* Remove trailing slashes from GitHub and Twitter URLs to avoid redirects.
Merge pull request #19 from ZDroid/improve-html

Improve HTML and Markdown syntax
Remove redundant module require
Merge pull request #21 from ZDroid/remove-redundant-require

Remove redundant module require