LocalTunnel Crash Fix

[dhuang612]

function localtunnel { lt -s YOUR_SUBDOMAIN --port 5000 } until localtunnel; do echo "localtunnel server crashed" sleep 2 done
This line should be changed from this:
lt -s YOUR_SUBDOMAIN --port 5000

to this:
lt --subdomain YOUR_SUBDOMAIN --port 5000

according to their github page
https://github.com/localtunnel/localtunnel