npm/npm-registry-mock — pull request #8 by evanlucas (2014-01-07 23:26:41+00:00)
Title: Added routes for /<package>/missing (Fixes #7)

For npm/npm#4386

When requesting a version that does not exist from the registry, it
returns { "error": "version not found: " }. This prevents
having to specify mock routes for a version that does not exist by
replying similar to the way the registry does.