Updating dependencies

All dependencies updated:
```
$ npm shrinkwrap --dev
wrote npm-shrinkwrap.json

$ nsp audit-shrinkwrap
Name  Installed  Patched  Vulnerable Dependency
qs      0.5.6     >= 1.x  grunt-ngdocs > grunt-contrib-watch > tiny-lr-fork

$ npm outdated --depth 0 | sort
# no results
```

Fixes #112