Update style guidelines

Add notes about whitespace

STYLE_GUIDELINES

@@ -3,24 +3,7 @@
 Javascript code follows the coding conventions set out in
 http://www.mediawiki.org/wiki/Manual:Coding_conventions/JavaScript
 
-There is one crucial exception in that this project uses slightly different whitespace rules:
-there is no need for a space at the start or end in parentheses.
-e.g.
-
-	function name(arg1, arg2) {
-		// do this
-	}
-
-	var x = function(arg1, arg2) {
-		// do this
-	}
-	if(x == 4) {
-		// do this
-	}
-
-	for(x = 0; x < 5; x++) {
-		// do this
-	}
+Note: Previously we used our own whitespace guidelines however any future commits should adhere to standards in above link.
 
 == CSS ==