Merge pull request #896 from aws-powertools/instil-reference

chore: Add Instil as a customer ref

Author: hjgraca

README.md

@@ -92,6 +92,7 @@ Knowing which companies are using this library is important to help prioritize t
 The following companies, among others, use Powertools:
 
 * [Caylent](https://caylent.com/)
+* [Instil Software](https://instil.co/)
 * [Pushpay](https://pushpay.com/)
 
 ### Sharing your work

docs/index.md

@@ -163,6 +163,9 @@ Knowing which companies are using this library is important to help prioritize t
 [**Caylent**](https://caylent.com/){target="_blank" rel="nofollow"}
 { .card }
 
+[**Instil Software**](https://instil.co/){target="_blank" rel="nofollow"}
+{ .card }
+
 [**Pushpay**](https://pushpay.com/){target="_blank" rel="nofollow"}
 { .card }