chore, put drone.io build status into README.md

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, mention new ohloh URL in README.md

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'next'

* next:
  chore, mention new ohloh URL in README.md
  chore, put drone.io build status into README.md