KT-3008 Change the way how modules are referenced in JS

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java

@@ -48,6 +48,10 @@ public class K2JSCompilerArguments extends CommonCompilerArguments {
     @ValueDescription("<version>")
     public String target;
 
+    @Argument(value = "module-kind", description = "Kind of a module generated by compiler. Supported values are: plain (by default), " +
+                                                   "amd, commonjs.")
+    public String moduleKind;
+
     @Nullable
     @Argument(value = "main", description = "Whether a main function should be called; default '" + CALL + "' (main function will be auto detected)")
     @ValueDescription("{" + CALL + "," + NO_CALL + "}")