add a newline to the result to remove the percentage in the CLI output

Author: mrwnmncd

bin/cli.js

@@ -1,4 +1,4 @@
 #! /usr/bin/env node
 
 var ULID = require('../dist/index.umd.js')
-process.stdout.write(ULID.ulid())
+process.stdout.write(ULID.ulid() + '\n')