Merge pull request #138 from Lombiq/issue/SNOW-203

SNOW-203: WTW case study

Readme.md

@@ -13,6 +13,7 @@ We at [Lombiq](https://lombiq.com/) also used this module for the following proj
 - The new [Xero4PowerBI website](https://xero4powerbi.com/) ([see case study](https://dotnest.com/blog/xero4powerbi-website-case-study-migration-to-orchard-core)).<!-- #spell-check-ignore-line -->
 - The new [Lombiq website](https://lombiq.com/) when migrating it from Orchard 1 to Orchard Core ([see case study](https://lombiq.com/blog/how-we-renewed-and-migrated-lombiq-com-from-orchard-1-to-orchard-core)).
 - The new [Ik wil een taart website](https://ikwileentaart.nl/) ([see case study](https://dotnest.com/blog/revamping-ik-wil-een-taart-migrating-an-old-version-of-orchard-core-website-with-custom-theme-and-commerce-logic-to-dotnest)).<!-- #spell-check-ignore-line -->
+- The new client portal for [WTW](https://www.wtwco.com/) ([see case study](https://lombiq.com/blog/lombiq-s-journey-with-wtw-s-client-portal)).
 
 This module is also available on all sites of [DotNest, the Orchard SaaS](https://dotnest.com/).