Most of the time I’m looking for this little command line, format of which I forget all the time..:)

 

git tag -a v0.1 -m "Creating my first beta version."
git push --tags

Furthermore, most probably you don’t want to read… And don’t need 🙂 Anyway GitHub app for Mac doesn’t manage yet the tags namespace (refs/tags), and you need to tag manually.
And also to do a git push –tags command …and again manually 🙂

At least they say so here http://superuser.com/a/308682