turn controllers into namespaces

api/controllers/blocks.js

@@ -9,7 +9,7 @@ var Block = bitcore.Block;
 
 var mockBlocks = require('../test/data/blocks');
 
-function Blocks() {}
+var Blocks = {};
 
 var node;
 Blocks.setNode = function(aNode) {

api/controllers/node.js

@@ -1,6 +1,6 @@
 'use strict';
 
-function NodeStatus() {}
+var NodeStatus = {};
 var node;
 NodeStatus.setNode = function(aNode) {
   node = aNode;