update readme

README.md

@@ -1,6 +1,21 @@
 # Build REST API with Deno
 
-Steps to run this project:
+## Installing Deno
 
-1. Setup database settings inside `ormconfig.json` file
-2. Run `deno run` command
+Shell (Mac, Linux):
+  curl -fsSL https://deno.land/x/install/install.sh | sh
+
+PowerShell (Windows):
+  iwr https://deno.land/x/install/install.ps1 -useb | iex
+
+## Installing denon
+
+  deno install -qAf --unstable https://deno.land/x/denon/denon.ts
+
+## Running tests
+
+run 'deno test --allow-env --allow-net --allow-read --allow-write --unstable --config tsconfig.json' or 'denon test' to execute the tests.
+
+## Running server
+
+run 'deno run --allow-env --allow-net --allow-read --allow-write --unstable --config tsconfig.json app.ts' or 'denon start' to start server.