add seashell

Author: puckpuck

Diff for: README.md

@@ -6,10 +6,12 @@ A collection of Helm charts I use and maintain.
 helm repo add puckpuck https://puckpuck.github.io/helm-charts
 ```
 
-Available charts
+Available charts:
 
-1. [Power DNS](./charts/powerdns)
-2. [kspan](./charts/kspan)
+- [kspan](./charts/kspan)
+- [Power DNS](./charts/powerdns)
+- [seashell](./charts/seashell)
 
-
-Disclaimer: _I'm just a person that likes Kubernetes, and uses Helm to deploy things. Please use caution when deploying some random thing from some random person._
+Disclaimer: _I'm just a random person that likes Kubernetes, and uses Helm to
+deploy things. Please use caution when deploying some random thing from some
+random person._