allow to use subcomponents

usage:
   MyComponent.prototype.name = 'maincomponent'
   MyComponent.prototype.components = [require('subcomponent')]

result:
   maincomponent
   maincomponent:subcomponent

lib/components.js

@@ -160,7 +160,7 @@ SingletonComponentFactory.prototype.init = function(context) {
 // Don't call the create method for singleton components
 SingletonComponentFactory.prototype.create = function() {};
 
-App.prototype.component = function(viewName, constructor) {
+App.prototype.component = function(viewName, constructor, ns) {
   if (typeof viewName === 'function') {
     constructor = viewName;
     viewName = null;
@@ -175,15 +175,23 @@ App.prototype.component = function(viewName, constructor) {
   // Inherit from Component
   extendComponent(constructor);
 
+  // Set namespace to the component if it's passed along
+  if (ns)
+    constructor.prototype.ns = ns;
+
   // Load template view from filename
   if (constructor.prototype.view) {
     var viewFilename = constructor.prototype.view;
     viewName = constructor.prototype.name || path.basename(viewFilename, '.html');
+    if (ns)
+      viewName = ns + ':' + viewName;
     this.loadViews(viewFilename, viewName);
 
   } else if (!viewName) {
     if (constructor.prototype.name) {
       viewName = constructor.prototype.name;
+      if (ns)
+	viewName = ns + ':' + viewName;
       var view = this.views.register(viewName);
       view.template = templates.emptyTemplate;
     } else {
@@ -194,6 +202,15 @@ App.prototype.component = function(viewName, constructor) {
   if (constructor.prototype.style) {
     var styleFilename = constructor.prototype.style;
     this.loadStyles(styleFilename);
+   }
+
+  // Load sub components
+  var subComponents = constructor.prototype.components;
+  if (subComponents) {
+      console.log("loading components: ", subComponents);
+    for(var i = 0, len = subComponents.length; i < len; i++) {
+      this.component(null, subComponents[i], viewName);
+    }
   }
 
   // Associate the appropriate view with the component type