Added readme and add php/mysql files

.docksal/etc/mysql/my.cnf

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+[mysqld]
+
+# Enable slow query logging
+#long_query_time=1
+#slow_query_log=1
+#slow_query_log_file=/dev/stdout

.docksal/etc/php/php.ini

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+; PHP settings
+[php]
+;Maximum amount of memory a script may consume
+;memory_limit = 512M

README.md

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+# Symfony Skeleton Installation Powered By Docksal
+
+This is a sample vanilla symfony skeleton installation pre-configured for use with Docksal.  
+
+Features:
+
+- Symfony Web Application
+- `fin init` [example](.docksal/commands/init)
+- Using the [default](.docksal/docksal.env#L9) Docksal LAMP stack with [image version pinning](.docksal/docksal.env#L13-L15)
+- PHP and MySQL settings overrides [examples](.docksal/etc)
+- Command wrapper for Symfony Console
+
+## Setup instructions
+
+### Step #1: Docksal environment setup
+
+**This is a one time setup - skip this if you already have a working Docksal environment.**  
+
+Follow [Docksal environment setup instructions](https://docs.docksal.io/en/master/getting-started/env-setup)
+
+### Step #2: Project setup
+
+1. Clone this repo into your Projects directory
+
+    ```
+    git clone https://github.com/docksal/example-symfony-webapp.git symfonyapp
+    cd symfonyapp
+    ```
+
+2. Initialize the site
+
+    This will initialize local settings and install the site connection file.
+
+    ```
+    fin init
+    ```
+
+3. Point your browser to
+
+    ```
+    http://symfonyapp.docksal
+    ```
+
+## More automation with 'fin init'
+
+Site provisioning can be automated using `fin init`, which calls the shell script in [.docksal/commands/init](.docksal/commands/init).  
+This script is meant to be modified per project. The one in this repo will give you a good starting example.
+
+Some common tasks that can be handled by the init script (an other [custom commands](https://docs.docksal.io/en/master/fin/custom-commands/)):
+
+- initialize local settings files for Docker Compose, Drupala, Behat, etc.
+- import DB or perform a site install
+- compile Sass
+- run DB updates, revert features, clear caches, etc.
+- enable/disable modules, update variables values