update readme

Author: mevdschee

README.md

@@ -55,6 +55,8 @@ Alternatively you can integrate this project into the web framework of your choi
 
 In these integrations [Composer](https://getcomposer.org/) is used to load this project as a dependency.
 
+For people that don't use composer, the file "`api.include.php`" (containing everything but the configuration) is provided.
+
 ## Configuration
 
 Edit the following lines in the bottom of the file "`api.php`":