commit f80b418

readme: fix example config

There's no way to escape single quotes in shell scripts. Since the
default password uses one, switch to here-documents.

 1@@ -8,12 +8,13 @@ Works best with soju!
 2 
 3 ```shell
 4 mkdir -p ~/.config/senpai
 5-echo '
 6+cat <<EOF >~/.config/senpai/senpai.yaml
 7 addr: irc.freenode.net:6697
 8 nick: senpai
 9 real: Senpai is the best senpai
10 user: sasluser
11-password: "my password can't be this cute"' > ~/.config/senpai/senpai.yaml
12+password: "my password can't be this cute"
13+EOF
14 go run ./cmd/irc
15 ```
16