For those wanting to use Rooms from the Appstore to connect to the chatroom, here are the instructions:
Go to settings and hit connections. Add a server with these settings:
Label: esper (just what I call it)
Server: irc.esper.net
Port: 6667
Password: [leave blank]
Use SSL: Off
Always connect: Off
User settings:
Nickname : [choose one]
Password: [leave blank]
Username: [I do same as nickname]
Realname: [don't use your real name

]
More settings:
Default rooms: #eic