fix typos
refactoring, move the marker scaling stuff out of RCSBuildAid class

Conflicts:
	RCSBuildAid.cs
rename class CoMVectors to MarkerVectos

Conflicts:
	Gui.cs
reorganize all the project files, and start commiting .csproj and .cs
Change move around a minus signs for correctness in torque calculation,
and change "4/9" => "4f/9f" because the former is not always a float.
fix physicalSignificance code detection.

There are actually two properties that control this:
part.PhysicsSignificance
part.physicalSignificance
quick fix for the dV reading in 0.23.5
Add scaling for the CoT and CoL markers.
readme++ changelog++
fixes for hasPhysicsEnabled method (thanks angavrilov)

* there's no need for the landing gear check.
* root part has always physics enabled.
Calculate marker's forces even if the marker is invisible.

Marker must be active though.

Conflicts:
	Plugin/MarkerVectors.cs
set vector values to zero when marker is disabled
dV readout isn't right when isn't referenced to the CoM
update readme
fix package.sh script