Update README

Author: jpcaparas

README.md

@@ -1,15 +1,51 @@
-# Docker Web App Boilerplate
+# Docker Web Stack
+
+---
 
 ## What's inside
+
 A `docker-compose`-powered stack to get your PHP web app project running.
 
 - PHP-FPM 7.1
 - nginx
 - MariaDB
 - Node w/ Yarn
 
+---
+
 ## Requirements
-_In progress..._
 
-## How-to
-_In progress..._
+- `Docker` v17.03.1-ce or higher
+- `docker-compose` v1.11.2 or higher
+
+---
+
+## How-to (simple)
+
+To start the stack, run:
+
+        docker-compose up -d --build --remove-orphans
+
+- The `-d` flag daemonises the stack.
+- The `--build` builds services (e.g. `php-fpm`, `nginx`) that comprise the stack.
+- The `--remove-orphans` stack ensures that services that aren't being used are deleted (to save disk space).
+
+---
+
+## How-to (advanced)
+
+### Re-building a service
+
+If you want to extend the functionality of a service (e.g. php-fpm), you have to re-build it.
+
+To accomplish this, modify the Dockerfile, then run:
+
+        docker-compose build --no-cache --force-rm [name-of-service]
+
+... followed by a `docker-compose up [arguments...]`
+
+---
+
+## Warranties
+
+- This stack was built on `macOS Sierra` v10.12.5. Experience may very on other operating systems.