Tri - V tail multi rotor XBS

Based on my printable tri copter X bow http://www.thingiverse.com/thing:227974
I had a few requests for a simple boom version and wanted to upgrade my X525 quad to a V-tail
This is based on the X 525 booms that are 12.7 mm square booms so should fit stock US 1/2 inch wood booms as well
Can be configured as a Tri or V tail copter
Designed around the KK 2.0 control board
Update March 15> Added a standard "flat" motor base for 10mm booms and and adapted version of my pivot mechanism als