chore(.gitignore): ignore stylecop files
chore(.gitignore): ignore stylecop files

Prevent StyleCop files being commited with the repo.

gpvigano/VRTK,red-horizon/VRTK,TMaloteaux/SteamVR_Unity_Toolkit,mimminito/SteamVR_Unity_Toolkit,nmccarty/htvr,adamjweaver/VRTK,gomez-addams/SteamVR_Unity_Toolkit,thacio/SteamVR_Unity_Toolkit,Innoactive/IA-unity-VR-toolkit-VRTK,pargee/SteamVR_Unity_Toolkit,gpvigano/SteamVR_Unity_Toolkit,thestonefox/VRTK,virror/VRTK,jcrombez/SteamVR_Unity_Toolkit,bengolds/SteamVR_Unity_Toolkit,Fulby/VRTK,thestonefox/SteamVR_Unity_Toolkit,phr00t/SteamVR_Unity_Toolkit,mbbmbbmm/SteamVR_Unity_Toolkit,Blueteak/SteamVR_Unity_Toolkit,mattboy64/SteamVR_Unity_Toolkit