Hi Adam,
Please refer the below two links, they are for IKEv2 configuration.
The first link guides how to configure the Dynamic Crypto Map section(need to do on the device which will have a static public ip):
http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/118652-configure-asa-00.html
The second link guides how to configure the Static Crypto Map section(need to do on the device which will get dynamic ip)
http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/115935-asa-ikev2-debugs.html
Please let me know if you have any queries, I will try my best to answer them.
Regards,
Mrutunjay Sethi