Extend the push script to add tagging.

Author: brendandburns

push-package.sh

@@ -1,3 +1,10 @@
 #!/bin/bash
+if [[ "${1}x" == "x" ]]; then
+  echo "Usage: ${0} <version>"
+  exit 1
+fi
+
+git tag ${1}
+git push upstream ${tag}
 
 npm publish