Fixed linters, added a documentation template

Author: vsdudakov

README.md

@@ -22,7 +22,8 @@
 
 FastAdmin is an easy-to-use Admin App for FastAPI inspired by Django Admin.
 
-FastAdmin was built with relations in mind and admiration for the excellent and popular Django Admin. It's engraved in its design that you may configure your admin dashboard for FastAPI easiest way.
+FastAdmin was built with relations in mind and admiration for the excellent and popular Django Admin.
+It's engraved in its design that you may configure your admin dashboard for FastAPI/Flask/Django easiest way.
 
 FastAdmin is designed to be minimalistic, functional and yet familiar.