Merge pull request #12 from eHealthAfrica/feature/background-sync-to-couchdb

Feature/background sync to couchdb
Merge branch 'feature/background-sync-to-couchdb' into develop
Bump Android version code to v12
Release v0.0.12
Update README.md
Merge branch 'develop' into feature/startup-authentication
removed unused functions, background-service, minor js-hint fixes