Update README.md

README.md

 ## This is the privacyIDEA-PHP-SDK
 
-This library will help you to connect your plugin to the privacyIDEA server using REST APIs.
+This library will help you to connect your Plugin to the privacyIDEA server using REST APIs.
 
 ## Requirements
 
-To use our API library you have to install curl on your machine or add curl/curl using Composer. 
-To do it with Composer simply copy that line to your terminal in your project directory:
+To use our API Library you have to install Curl on your machine or add curl/curl using Composer. 
+To do it with Composer simply copy that line to your Terminal in your project directory:
 
 `composer require curl/curl`
 
-Remember that you have to install composer first. If you will know how to do it, check this documentation:
+Remember that you have to install Composer first. Required version is >=2.0. If you will know how to install Composer, check this documentation:
 https://getcomposer.org/doc/00-intro.md