Updates to new "slightly less stupid" NPM Download API.

See also: https://github.com/npm/npm-www/commit/8098d49c7dd7b7d7560d4a832a0d893549334ca8?diff=split#diff-1ae516c24e8538cb91e3c2670eab27d3R1
Replaces utils.js merge() with lodash.merge
Merge pull request #3 from dsc/master

Updates to new "slightly less stupid" NPM Download API