Fixed require issue.

redis_analytics/lib/redis_analytics/dashboard.rb:18:in
`<class:Dashboard>': uninitialized constant
Rack::RedisAnalytics::Helpers (NameError)
Added tracking of more information about browsers for Mobile/Tablet and Desktops.
Merge remote-tracking branch 'upstream/master'

Merging Upstream to my branch
Merge pull request #2 from richrace/master

Fixed require issue.