First pass for scripts to rule them all

script/build_frontend

@@ -0,0 +1,20 @@
+# Builds the frontend for production
+
+cd "$(dirname "$0")/.."
+
+cd homeassistant/components/frontend/www_static/home-assistant-polymer
+npm run frontend_prod
+
+cp bower_components/webcomponentsjs/webcomponents-lite.min.js ..
+cp build/frontend.html ..
+
+# Generate the MD5 hash of the new frontend
+cd ../..
+echo '""" DO NOT MODIFY. Auto-generated by build_frontend script """' > version.py
+if [ $(command -v md5) ]; then
+    echo 'VERSION = "'`md5 -q www_static/frontend.html`'"' >> version.py
+elif [ $(command -v md5sum) ]; then
+    echo 'VERSION = "'`md5sum www_static/frontend.html | cut -c-32`'"' >> version.py
+else
+    echo 'Could not find an MD5 utility'
+fi