Update node-sass dependency to 9.2
Update npm-shrinkwrap.json
Update npm-shrinkwrap.json
Default source comments to 'none' because of node-sass/issues/337

https://github.com/sass/node-sass/issues/337
Update npm-shrinkwrap.json
Merge pull request #27 from amclin/master

Update to node-sass 0.9.2 for #26