chore(MADEWITHVRTK.md): add game to list
chore(MADEWITHVRTK.md): add game to list

Fort Awesome has been added to the list.
red-horizon/VRTK,Innoactive/IA-unity-VR-toolkit-VRTK,virror/VRTK,thestonefox/VRTK,mattboy64/SteamVR_Unity_Toolkit,adamjweaver/VRTK,TMaloteaux/SteamVR_Unity_Toolkit,gpvigano/VRTK,thestonefox/SteamVR_Unity_Toolkit,gpvigano/SteamVR_Unity_Toolkit,Fulby/VRTK,gomez-addams/SteamVR_Unity_Toolkit