Improving and fixes:

* Added depedencies at setup.py (Markdown and crcmod)
* Replaced naming files from num by counting to generated crc hash by source
* Removing prefixes of plugin name
* Fix make png at PlantUML from tmp file
* Added more examples of usage plugins
* Changed checking <tag> with regexp because it did not work with jinja
* Removed extract_format function, extracting format from regexp group
* Improving speed with checking exist generated files