fixed startup for VTOL -> some variable names were changed lately
fixed parameter issue for VTOL so that parameter wiki tool can document them
shortened parameter names to max 16 bytes
Added Gitter badge
Merge pull request #1515 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md
Added aerocore upload target.
Merge pull request #1516 from jgoppert/aerocore-upload

Added aerocore upload target.
Merge pull request #1509 from PX4/VTOL_startup_and_parameter_fix

Vtol startup and parameter fix
Merge branch 'master' into bennodiscovery

Conflicts:
	makefiles/upload.mk