get_push_certificate.md in fastlane-2.118.0.beta.20190307200117

- old
+ new

@@ -66,9 +66,15 @@
 
 ```no-highlight
 fastlane pem --development
 ```
 
+If you want to generate a Website Push certificate:
+
+```no-highlight
+fastlane pem --website_push
+```
+
 Set a password for your `p12` file:
 
 ```no-highlight
 fastlane pem -p "MyPass"
 ```