sanitize perf related code

Basically trying to pass jslint/jshint checks. Otherwise IDE
highlights errors and makes code unreadable. Disabling validation
doesn't seem to be a good idea.
Merge pull request #12 from pavel-paulau/lint

sanitize perf related code
sort dependencies alphabetically
update package and repository name
use winston as console logger
add sync gateway installer utility
add sync gateway cluster setup utility