Enhance Readme

README.md

@@ -2,15 +2,19 @@
 
 This module contains logic to calculate multiple scaled image sizes from one source image and configuration options. It is meant to create appropriate `srcset`and `sizes` attributes for responsive images that best fit the given image and information about the HTML/CSS context.
 
-It only contains business logic to define the expected sizes. The actual handling of the image data, like resizing, caching of the result etc. is not handled by the module, but done by the calling code, the interface `ImageData` serves as main connection point. 
+It only contains business logic to define the expected sizes. The actual handling of the image data, like resizing, caching of the result etc. is not handled by the module, but done by the calling code, the interface `ImageData` serves as main connection point.
 
 ## Installation
 
+Install with composer:
+
+    composer require mhe/imagetools ^1.0
+
 ## Usage overview
 
 - Implement interface `Mhe\Imagetools\Data\ImageData` as a wrapper for your images and processing methods
 - create a `Mhe\Imagetools\Data\RenderConfig` object holding options and context information like the specific image layout context
-    ``` 
+    ```
     $config = new RenderConfig("max-width: 1000px) 100vw, 1000px", 5, 20000, 2);
     ```
 - create a new `Mhe\Imagetools\ImageResizer` and let it process the source image with given configuration: