PEP8 plugin Installation instructions for other editors

In https://github.com/pyvec/naucse.python.cz/pull/306, Lumír added initial instructions for installation of pep8 plugins for editors.

But the situation is not that simple. For Atom we now have simple step by step description and for other editors just a note about PEP8. But installation for Notepad++, Gedit and Kate requires a manual download of plugins and/or copying a script from various sources to right folders which may not exist on the filesystem etc.

• Notepad++ - https://kmonsoor.wordpress.com/2014/05/02/pep8_tonizer-on-for-notepad-make-your-python-code-pep8-compliant-on-editor/
• Gedit - https://github.com/khertan/gedit_flake8
• Kate - https://github.com/goinnn/Kate-plugins#id15

Question is whether it's a good idea to add the complicated guide for plugins installation to editors' pages when mentioned editors aren't used widely.

Examinez les instructions existantes concernant les éditeurs ainsi que les premières indications d’installation de la pull request 306, puis comparez les sources des plugins Notepad++, Gedit et Kate liées ici. Déterminez si ces étapes d’installation doivent figurer sur les pages des éditeurs et définissez une portée cohérente pour tout ajout.