Update README, silence Ecto warning

Author: Maxime Buffa

README.md

@@ -1,11 +1,11 @@
 # PathDemo
+This is a live demonstration of the A* pathfinding algorithm implemented in Elixir using LiveView. The algorithm itself is a functional step-by-step version of the famous A* algorithm, which is most commonly used in video games.
 
-## Online Demo
 Head over to https://path-demo.fly.dev and enjoy!
 
-## Context
-This is a live demonstration of the A* pathfinding algorithm implemented in Elixir using LiveView. The algorithm itself is a functional step-by-step version of the famous A* algorithm, which is most commonly used in video games.
+(It's not supposed to be multiplayer, and it's not instanced, so others might try to move the robot while you do so 😄)
 
+## Context
 I hacked together the original version of this demo literally over a weekend, ingesting a lot of content about pathing, and a bit about LiveView, in order to do an internal talk at Pandascore.
 I got back to it and refactored the whole thing later to clean it up, so overall, I think this is a great demonstration of some of Elixir capabilities, and how to implement such an algorithm in a functional way, leveraging pattern matching quite extensively.
 

config/config.exs

@@ -7,9 +7,6 @@
 # General application configuration
 import Config
 
-config :path_demo,
-  ecto_repos: []
-
 # config :path_demo,
 #   ecto_repos: [PathDemo.Repo]
 

lib/path_demo/repo.ex

@@ -1,5 +1,5 @@
-defmodule PathDemo.Repo do
-  use Ecto.Repo,
-    otp_app: :path_demo,
-    adapter: Ecto.Adapters.Postgres
-end
+# defmodule PathDemo.Repo do
+#   use Ecto.Repo,
+#     otp_app: :path_demo,
+#     adapter: Ecto.Adapters.Postgres
+# end