Document keybindings with multiple extensions - close #1379
Document keybindings with multiple extensions - close #1379

kenny-evitt/LightTable,bruno-oliveira/LightTable,sbauer322/LightTable,rundis/LightTable,bruno-oliveira/LightTable,bruno-oliveira/LightTable,rundis/LightTable,sbauer322/LightTable,Bost/LightTable,kenny-evitt/LightTable,Bost/LightTable,LightTable/LightTable,rundis/LightTable,kenny-evitt/LightTable,LightTable/LightTable,sbauer322/LightTable,Bost/LightTable,LightTable/LightTable