Add resources to website generator state

lib/output/website/state.js

@@ -2,11 +2,18 @@ var I18n = require('i18n-t');
 var Immutable = require('immutable');
 
 var GeneratorState = Immutable.Record({
-    i18n:       I18n()
+    i18n:       I18n(),
+
+    // List of plugins' resources
+    resources:  Immutable.Map()
 });
 
 GeneratorState.prototype.getI18n = function() {
     return this.get('i18n');
 };
 
+GeneratorState.prototype.getResources = function() {
+    return this.get('resources');
+};
+
 module.exports = GeneratorState;