add deploy script

deploy

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+rm -rf dist && \
+  yarn build:site && \
+  cd dist && \
+  git init && \
+  git remote add origin [email protected]:mjmlio/mjml-app.git && \
+  git add . && \
+  git commit -m 'deploy' && \
+  git push -f origin master:gh-pages && \
+  printf '\n> everything has been deployed\n'