Add API endpoint for getting events in a district
readme: Copyedit links, replace learn.github.com link

learn.github.com doesn't load, so I replaced that page with Try Git.
Proper linebreak after rookie year
Merge pull request #1064 from mc10/patch-1

readme: Copyedit links, replace learn.github.com link
Add API endpoint for list of valid district keys
Add multi year support for district list
expose district points to API
cleanup
add rookie points and alliance points
fix for parsing CD's improperly escaped HTML
Merge remote-tracking branch 'upstream/master'
Add award enums to API. This allows for unique keys to be assigned to awards

Basically, this lets me do https://github.com/the-blue-alliance/the-blue-alliance-android/issues/196 for awards, also
update cache versions
add spaces. dammit vim
Merge pull request #1065 from phil-lopreiato/api-award-enum

Add award enums to API.
rename for consistency. updated apidocs
Update about
Add district points per event to API
add call tracking to district API endpoints
update apidocs