Update README.md

Add code health status to README.md
(Bug 1032643) Tweak bug suggestions retrieval
fix delete_bugscache method in RefDataManager
fixup! fix delete_bugscache method in RefDataManager
remove the is_staff requirement to be able to do bug association;

Also the author of a bug association is always taken from the user
credentials and not from the data POSTED as it used to be
retrieve bug suggestions with an all words search
Merge pull request #183 from mozilla/bug-1042695-treeherder-tbpl-sync

remove the is_staff requirement to be able to do bug association
Update the readme to make it more comprehensive (1046639)
fix bug suggestions for crash and leak lines
Merge pull request #187 from mozilla/bug-1032643-tweak-bug-suggestions

Bug 1032643 tweak bug suggestions
Merge pull request #186 from tojonmz/update-readmes

Update the readme to make it more comprehensive (1046639)
Add caching to endpoints that don't change much
use ``cacheResponseAndETAG`` instead of just cache
bad import fix
Merge pull request #185 from mozilla/repo-endpoint-cache

Add caching to endpoints that don't change much
fix bug 1054955

truncate tzinfo from the last-modified attribute of incoming bugs
to let them play well with mysql
Merge pull request #189 from mozilla/bug-1054955-bugscache-update-error

fix bug 1054955
(Bug 1046108) Add a repository for mozilla-b2g32_v2_0
remove duplicate code from job_log_url endpoint
bug 1052487 - Add the description in the admin job view of jobType r=mdoglio