Update README with update help

thebaer · thebaer · commit d2db46625f2c · 2015-05-11T19:43:49.000-04:00
diff --git a/README.md b/README.md
@@ -14,6 +14,7 @@ writeas [global options] command [command options] [arguments...]
 COMMANDS:
    post     Alias for default action: create post from stdin
    delete   Delete a post
+   update   Update (overwrite) a post
    get      Read a raw post
    add      Add a post locally
    list     List local posts
