Adding CppCMS

Adding CppCMS.
If in the group there is the version number you can add the detection for it with
```js
 "headers": { "X-Powered-By": "CppCMS/([\\d.]+)\\;version:\\1" },
```
otherwise you should use a non-capturing group to improve performance see http://stackoverflow.com/questions/3512471/non-capturing-group.