Added the template file used to generate Filters.swift.
Added the template file used to generate Filters.swift.

slightair/SwiftGraphics,hejunbinlan/SwiftGraphics,marinehero/SwiftGraphics,Pretz/SwiftGraphics,sdesimone/SwiftGraphics,SheffieldKevin/SwiftGraphics,slightair/SwiftGraphics,Pretz/SwiftGraphics,slightair/SwiftGraphics,marinehero/SwiftGraphics,hejunbinlan/SwiftGraphics,sdesimone/SwiftGraphics,SheffieldKevin/SwiftGraphics,sdesimone/SwiftGraphics,SheffieldKevin/SwiftGraphics,sdesimone/SwiftGraphics,Pretz/SwiftGraphics,hejunbinlan/SwiftGraphics,marinehero/SwiftGraphics,marinehero/SwiftGraphics,slightair/SwiftGraphics,Pretz/SwiftGraphics,hejunbinlan/SwiftGraphics