flexiplane Creator 1.1.5 for Maya (maya script)

-added a safe delete function
- and a shelf file

 1.1.3 changes:
-added control curves to joints 
-changed mid control to nurbsSphere 
-offset mid control 
-fixed bug where if you already had tweak nodes in your scene the flexiplane creator didn't work

1.1.4 updates:
-replaced shelf_flexiplane.mel  

1.1.5 updates:
- updated user interface
- added text validator to line edit
- converted mid control spehre to control curve