add supports to Raptor fingers

And combine the three EHFingertip files into one.
remove redundant files
added label to Raptor Hand
add labels to Raptor Hand, add 4-pin tensioner

If no thumb, use four pin tensioner.
add pin scaling to tighten fit
Merge pull request #29 from e-nable/add-supports-and-label-to-Raptor

Add supports and label to raptor and scale pins to reduce looseness at large scales