Update README.md

Outdated URLs in the description.  I should do a pull request, but ... we already have 15, this is just a doc file, and this is better than what's there.  I did test each link!
uncomment call_command_async
Apply Django fix so all jobs are run in chronograph, guaranteed.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into avoid_command_infinite_loops

Conflicts:
	kalite/templates/video_download.html
small updates
putting @api_handle_error_with_json decorator closest to function body.  Adding to coachreports API
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into updates_app

Conflicts:
	kalite/main/api_views.py
	kalite/main/management/commands/videodownload.py
	kalite/main/views.py
	kalite/securesync/api_views.py
	kalite/templates/admin_distributed.html
	kalite/templates/video_download.html
	kalite/utils/topic_tools.py
adding 'cancel' field to updates.  Still need to hook it up to the UI.
Merge branch 'django_apply_bugfix' of github.com:bcipolli/ka-lite into updates_app

Conflicts:
	README.md
Merge branch 'reversed_decorators' of github.com:bcipolli/ka-lite into updates_app
Merge branch 'avoid_command_infinite_loops' into updates_app

Conflicts:
	kalite/main/management/commands/subtitledownload.py
	kalite/main/management/commands/videodownload.py
	kalite/templates/video_download.html
fixing bugs by removing commented out variable setting
Merge branch 'updates_app' of github.com:bcipolli/ka-lite into update_all

Conflicts:
	kalite/main/api_views.py
	kalite/main/management/commands/subtitledownload.py
	kalite/main/management/commands/videodownload.py
	kalite/templates/admin_distributed.html
	kalite/templates/video_download.html
	kalite/updates/api_views.py