added a little test case to see if using $ variables works in kotlin for JS generation (e.g. for angularjs support)

js/js.translator/testFiles/expression/dollarParameter/cases/dollarParameter.kt

@@ -0,0 +1,9 @@
+package foo
+
+fun MyController(`$scope`: String): String {
+    return "Hello " + `$scope` + "!"
+}
+
+fun box(): String {
+    return MyController("world")
+}