Just some little adjustment
Merge pull request #355 from Kenny9999/development

Just some little adjustment
Update AeroQuad_ICD.txt

adding user requested altitude data (baro or range finder)
Update AeroQuad/SerialCom.h

added user request to plot altitude data
try to solve the rounding issue
Merge pull request #356 from rgorosito/development-osdheadingfix

try to solve the rounding issue
to resolve 360º issue
Merge pull request #357 from rgorosito/development-osdheadingfix

to resolve 360º issue
Merge branch 'development' of http://github.com/AeroQuad/AeroQuad

Conflicts:
	AeroQuad/SerialCom.h