Add JS namespaces to tag name, remove XML namespaces (fixes #7)

Except closing issue #7, it seems that there is no reason to leave support of XML namespaces in tag names.

This is result of PR

![screenshot 2014-09-30 18 12 24](https://cloud.githubusercontent.com/assets/234692/4460673/3aabb0ae-48b4-11e4-87b2-7eb0c1faaa36.png)