Resolve "refactor vars"

Closes #2 (closed) #9 (closed)

• I have changed TheRojam variables to E-lie variables because, as said, the latter were more flexible and consistent with Ansible good practises.
• I have tested the changes and the role still works perfectly.
• Readme in English / French with variables changes (suggestions for evolution are welcome!).

default/main.yml

@@ -21,6 +21,6 @@ ynh_users: ~
 ynh_apps: ~
   # - label: Tiny Tiny RSS # Label is important, it's a reference for the Playbook.
   #   link: ttrss # It can be the name of an official ynh app or a git repo link
-  #   args: # Provide args here. Path and domain are mandatory, other args depend on the app (cf manifest.json of app).
-  #     path: /ttrss
-  #     domain: domain.tld
\ No newline at end of file
+  #   args: # Provide args here. Domain and path are mandatory, other args depend on the app (cf manifest.json of app).
+  #     domain: domain.tld
+  #     path: /ttrss
\ No newline at end of file