Update instructions on README (#547)

Tweaked README instructions as the paths were slightly different.

README.md

@@ -139,11 +139,11 @@ Install strongSwan, then copy the included ipsec_user.conf, ipsec_user.secrets,
 #### Ubuntu Server 16.04 example
 
 1. `sudo apt-get install strongswan strongswan-plugin-openssl`: install strongSwan
-2. `/etc/ipsec.d/certs`: copy `user.crt` from `algo-master/configs/<name>/pki/certs`
-3. `/etc/ipsec.d/private`: copy `user.key` from `algo-master/configs/<name>/pki/private`
-4. `/etc/ipsec.d/cacerts`: copy `cacert.pem` from `algo-master/configs/<name>/cacert.pem`
-5. `/etc/ipsec.secrets`: add your `user.key` to the list, e.g. `xx.xxx.xx.xxx : ECDSA user.key`
-6. `/etc/ipsec.conf`: add the connection from `ipsec_user.conf` and update `leftcert` to match the `user.crt` filename
+2. `/etc/ipsec.d/certs`: copy `<name>.crt` from `algo-master/configs/<server_ip>/pki/certs/<name>.crt`
+3. `/etc/ipsec.d/private`: copy `<name>.key` from `algo-master/configs/<server_ip>/pki/private/<name>.key`
+4. `/etc/ipsec.d/cacerts`: copy `cacert.pem` from `algo-master/configs/<server_ip>/pki/cacert.pem`
+5. `/etc/ipsec.secrets`: add your `user.key` to the list, e.g. `<server_ip> : ECDSA <name>.key`
+6. `/etc/ipsec.conf`: add the connection from `ipsec_user.conf` and ensure `leftcert` matches the `<name>.crt` filename
 7. `sudo ipsec restart`: pick up config changes
 8. `sudo ipsec up <conn-name>`: start the ipsec tunnel
 9. `sudo ipsec down <conn-name>`: shutdown the ipsec tunnel