Revert "Package manifest: Updated eslint."
Revert "Package manifest: Updated eslint."

This reverts commit 9f2c659b276a5c4e1b83d62efd734085d993d2aa.

Didn't realise eslint dropped support for node 0.10 and 0.11!
This means the build broke -- apologies for that. Fixing by
reverting the eslint version.

cgiffard/node-simplecrawler,civalin/node-simplecrawler,simplecrawler/simplecrawler,simplecrawler/simplecrawler