Fix Lua invaders sample

Samples/luainvaders/data/game.rml

@@ -26,7 +26,7 @@
 				padding: 9px 0px 0px 65px;
 				margin: 0px 20px;
 
-				font-size: 20;
+				font-size: 20px;
 
 				background-decorator: tiled-horizontal;
 				background-left-image: ../../assets/invader.tga 147px 55px 229px 0px;

Samples/luainvaders/data/start_game.rml

@@ -36,7 +36,7 @@ function StartGame.SetupGame(event,document)
     --some lua trickery coming up. Compiling a string at runtime that will return the values,
     --because they are comma separated. For example, if the user chose "Denim", then the
     --compiled string would look like "return 21,96,189"
-    local red,green,blue = loadstring('return '..event.parameters['colour']) ()
+    local red,green,blue = load('return '..event.parameters['colour']) ()
 	Game.SetDefenderColour(Colourb.new(red,green,blue,255))
 	
 	local elem = Window.LoadMenu('game',document):GetElementById('game')