Problem: No builtin way to build for qt-android
Solution: Add qt-android build system and add to travis-ci
Merge pull request #27 from jemc/master

Problem: No builtin way to build for qt-android
Problem: Project structure is hard to keep updated
Solution: Use zproject
Problem: Project structure slightly out of date
Solution: Regenerate with zproject
Merge pull request #28 from jemc/master

Problem: Project structure is hard to keep updated
Problem: wasting time with clunky use of CZMQ project scripts

Solution: switch to zproject (yay!)
Problem: not generating documentation properly

Solution: use latest zproject to do this.