minor changes

README.md

 # Wishlist-application
+# Overview
+This is a web application that allows you to buy gifts for people who have wishes, or to make some yourself.
+# How to run this application
+In order to run this app using docker, go to the docker folder and run the command docker compose up.
+You should have four containers startes on docker. You then run docker exec -it www_docker_symfony bash.
+you then go back to root and run symfony server:start --allow-all-ip.
+You're now ready to go.
+# Initialising the database
+This app comes with a database for testing.
+In order to use it, execute the command line below:
+mysql -u username -p wishlist < init.sql
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