Add shell script for development server

devserver.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+basedir=$(dirname "$0")
+
+if [ ! -d "$basedir/py" ]; then
+	echo "Directory \"py\" with a Python virtual environment"
+	echo "does not exist. See README.rst on how to set it up."
+else
+	export FLASK_DEBUG=1
+	export FLASK_APP="$basedir/soundboard.py"
+	"$basedir"/py/bin/flask run
+fi