renamed lua_lens_init to determine_lens_scale because it had nothing to do with lua.  Also added some block comments for major sections of the code
renamed lua_lens_init to determine_lens_scale because it had nothing to do with lua.  Also added some block comments for major sections of the code

shaunlebron/blinky,khonkhortisan/blinky,khonkhortisan/blinky,shaunlebron/blinky,shaunlebron/blinky,khonkhortisan/blinky