bug fix (when only 1 MS5611 is available)

git-svn-id: http://openxsensor.googlecode.com/svn@26 90973d50-1f1b-0509-0770-70c39df98553
bug fix (when only 1 ms5611 exists)

git-svn-id: http://openxsensor.googlecode.com/svn@27 90973d50-1f1b-0509-0770-70c39df98553
Wiki update - Vario Building refresh + various wiki pages correction

git-svn-id: http://openxsensor.googlecode.com/svn@28 90973d50-1f1b-0509-0770-70c39df98553
Wiki update - little wiki pages + images corrections

git-svn-id: http://openxsensor.googlecode.com/svn@29 90973d50-1f1b-0509-0770-70c39df98553