github all release + all assets total download count

[sagiegurari]

I think the title says it all.
Basically it helps smaller projects with binary assets to show total downloads of all their releases together.

[espadrine]

I think you want to put that in try.html, as index.html gets generated from it.

[espadrine]

Thanks for contributing!

As I explain in the review, I would prefer to merge the URL for this with /github/downloads/.

Could you squash the commits together?

[sagiegurari]

Thanks for the review.
I'll handle those changes tomorrow.

[sagiegurari]

I updated based on your comments however, I wasn't 100% sure about github/downloads consolidation, since the URL pattern is different in the current service and wasn't sure if it will catch shorter urls (with less params).
so there are now 2 services for the github/downloads pattern but they have different params amount.
The original:

camp.route(/^\/github\/downloads\/([^\/]+)\/([^\/]+)\/([^\/]+)\/([^\/]+)\.(svg|png|gif|jpg|json)$/,

The added (by me):

camp.route(/^\/github\/downloads\/([^\/]+)\/([^\/]+)\.(svg|png|gif|jpg|json)$/,

There are also now merge conflicts, so do you need to me merge from your master again?
It was after I squashed my last 9 commits into 1.

[sagiegurari]

due to all the conflicts I recreated the pull request with an up to date repo.
See #535