Update copyright year in license.
Update copyright year in license.

pocke/editorconfig-vim,pocke/editorconfig-vim,benjifisher/editorconfig-vim,VictorBjelkholm/editorconfig-vim,johnfraney/editorconfig-vim,johnfraney/editorconfig-vim,benjifisher/editorconfig-vim,pocke/editorconfig-vim,VictorBjelkholm/editorconfig-vim,benjifisher/editorconfig-vim,VictorBjelkholm/editorconfig-vim,johnfraney/editorconfig-vim