Extruder Titan Aero - Easy Removal from Prusa reprap & from RAMPS - with fan and BLTouch

***Edit***
Just add another Fan version, with a far better air flow to avoid issue of droping too fast the temp sensor measure

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On my reprap Prusa i3 based, I wanted:
- easy removable extruder from the X axis printer
- easy removable extruder from the printer itself (from ramps 1.4)
- with E3D Titan Aero
- with a fan for printing

So I did one, remixed from several sources (thanks a lot guys for your precious job and sharing spirit !).
In order to remove it easily I've used a X