Added support for video backgrounds

res/backgrounds/extend_section_bg.lua

@@ -0,0 +1,14 @@
+-- ex: extend_section_bg[100] = 0
+--     extend_section_bg[200] = 0
+-- the video background associated with section 0 will continue playing into 100 and 200 without restarting.
+-- will also cause any existing level 100, 200 backgrounds specified to NOT render.
+
+-- please also note that you cannot currently extend any "named" backgrounds, such as "title" and "options-input"
+
+extend_section_bg = {}
+
+-- extend_section_bg[100] = 0
+-- extend_section_bg[200] = 0
+-- remove the dashes 
+
+return extend_section_bg