update README

README.md

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 ## Nextcloud installer script
 The lab guide is condensed into a script so Nextcloud can be installed  in less than 3 minutes by executing only one command and setting the admin user credentials.
 
+The following components will be set up and installed automatically:
+
+* php settings
+* sendmail email settings
+* cronjob
+* prettier URLs without index.php
+* Memcaching with redis and APCu
+* Client Push (notify_push)
+* nextcloud-update script
+* the default phone region will be set to `DE`, you may change it after the installation to a different setting
+
+
 Connect via SSH to your Uberspace an then run:
 
 ```