Logitech Powershell controller adapter for iPhone 6/7/8

Since the [Logitech Powershell game controller](https://www.amazon.com/Logitech-940-000151-Powershell-Batteryaccs-Ctlr-iphone/dp/B00FHREO8K/ref=sr_1_1) was made for the iPhone 5 and SE form factor, I made an adapter mount which not only fits the more recent 6/6s/7 (and probably the 8 with a slight bracket adjustment), but also provides greater screen viewing angle flexibility.

This is a bit of a remix from [Pianotinker's](https://www.thingiverse.com/pianotinker/about) [iPhone 6 6s 7 car auto