Merge pull request #473 from steveklabnik/gh472

Add Sandstorm to friends

Author: brson

_data/users.yml

@@ -147,6 +147,11 @@
   url: http://purchaseclinic.com/
   logo: purchaseclinic.com.png
   how: "Our backend (REST API) is a 100% Rust server, based on Iron."
+-
+  name: Sandstorm
+  url: https://sandstorm.io
+  logo: sandstorm-logo-rust.svg
+  how: "The backend of <a href='https://sandstorm.io/news/2016-08-09-collections-app'>our Collections app</a> is written in Rust."
 -
   name: Sentry
   url: https://www.getsentry.com/