storage: document createWriteStream. fixes #119
Merge pull request #120 from stephenplusplus/master

storage: document createWriteStream. fixes #119
feat: add coveralls for coverage reports
Merge pull request #121 from silvolu/coveralls

feat: add coveralls for coverage reports
Add coverall badge to readme
Merge pull request #123 from silvolu/coveralls

Add coverall badge to readme
Fixed link for coveralls badge.