Update README.md

Author: Niklas Andréasson

README.md

@@ -24,7 +24,7 @@ First of make sure to install derby-datepicker through npm `npm install derby-da
 Including
 --------
 
-    app.component(require('derby-datepicker'));
+    app.use(require('derby-datepicker'));
         
 In template
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