MP Select Mini - Spool Holder Spindle clip

New add-on part for (Monoprice Select Mini spool holder by Toys, to be used along with Hatchbox spools center caps. http://www.thingiverse.com/thing:2006457)

The provided caps included with the Monoprice Select Mini spool holder by Toys, fit well but tend to slowly creep off the Filament Spool. Toys suggests taping them to spool to keep in place and that works well.

While using the spool holder I noticed that the Filament Spool feeds better when moved to the front side the spindle and aligns with the extruder feed point.

With that I decided to create a Spindle Clip that would address both issues, moves/keep the role to the front side the MP Select Mini, to better aligned extruder feed point and also keeps the the Hatchbox spool center caps on the spool without the need for tape.