trigger supervisor update (via watch_in) when confs are changed
add example BROKER_URL setting
add BROKER_PASSWORD to example secrets
use a celerybeat-schedule file in a location that we have proper permissions to read/write
Merge pull request #52 from caktus/worker-updates

Add example broker settings and fix celerybeat-schedule
Merge pull request #51 from caktus/supervisor-update

Reload supervisor config when confs are updated
Merge branch 'master' into solr-support
update solr state to be self contained; add docs