fix(templates): value generator should use value template

Author: rahim

value/index.js

@@ -14,7 +14,7 @@ function Generator() {
 util.inherits(Generator, ScriptBase);
 
 Generator.prototype.createServiceFiles = function createServiceFiles() {
-  this.appTemplate('service/constant', 'scripts/services/' + this.name);
+  this.appTemplate('service/value', 'scripts/services/' + this.name);
   this.testTemplate('spec/service', 'services/' + this.name);
   this.addScriptToIndex('services/' + this.name);
 };