rgrove/lectroid — pull request #1 by ericf (2013-01-23 20:05:47+00:00)
Title: Specify an npm version which ensures shrinkwrap support.

The `npm shrinkwrap` command was added in v1.1.2, by specifying at least that version it will ensure that Heroku respects a npm-shrinkwrap.json file.

http://stackoverflow.com/a/13839900