Pmvcs

+ Added new method get_providers for return kwargs of config, language, etc, only in use for unittest
+ Added some Unittests
^ Edited some docstrings
- Removed old method not in use in router.py (also in abstract class)
+ Added image with logo in README.md and README.ES.md, moved the images to another part of that files
^ Fixed small typo in CHANGELOG.md file
+ Added __main__.py and app.py in app folder and setup to run app project as module

^ Added direct link to images in README.MD and README.ES.MD
^ Examples to check code implementation
- Removed cmd scripts not related to production stage

Translated one spanish constant in es.ini (ERROR: Unknown format)
+ Added how to use configuration/language/view functions in documentation.
+ Added changelog in markdown format.