fix(HipTracking): format script to adhere to coding conventions
fix(HipTracking): format script to adhere to coding conventions

The Hip Tracking script did not adhere to the coding conventions
laid out in the contributing guidelines, so it has now been formatted
accordingly.

pargee/SteamVR_Unity_Toolkit,nmccarty/htvr,virror/VRTK,mattboy64/SteamVR_Unity_Toolkit,gpvigano/VRTK,Fulby/VRTK,gomez-addams/SteamVR_Unity_Toolkit,thestonefox/VRTK,adamjweaver/VRTK,Innoactive/IA-unity-VR-toolkit-VRTK,gpvigano/SteamVR_Unity_Toolkit,red-horizon/VRTK,thestonefox/SteamVR_Unity_Toolkit,TMaloteaux/SteamVR_Unity_Toolkit