Remove docker info from README.md

Author: jamesots

README.md

@@ -95,28 +95,6 @@ Development
 To run the examples and tests, you'll need to create a 'connection.options' file by
 copying 'connection.options.example' and modifying the settings.
 
-You can use Docker to create a temporary mysql instance for testing:
-
-```
-docker run --name mysql_test -d -P \
-   -e MYSQL_ROOT_PASSWORD=root \
-   -e MYSQL_USER=test \
-   -e MYSQL_PASSWORD=test \
-   -e MYSQL_DATABASE=test \
-   mysql
-```
-
-This will create and run a Docker container with the name `mysql_test`.
-
-You can determine the exposed port by running
-
-```
-docker port mysql_test
-```
-
-*Note: depending on your Docker configuration, you will likely have to change
-the host IP address.*
-
 Licence
 -------