Correctly name the gem so loading picks up the new adapter

Jan Stevens · Jan Stevens · commit 7e543dcfdbf2 · 2019-02-26T12:17:11.000+01:00
diff --git a/README.md b/README.md
@@ -10,7 +10,7 @@ using [ApiAuth](https://github.com/mgomes/api_auth)
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'artemis-api-auth'
+gem 'artemis-api_auth'
 ```
 
 And then execute:
