Added some documentation, this needs improvement

README.md

@@ -2,4 +2,21 @@
 Install package using composer
 ```sh
 composer require emico/magento1-attribute-landing
-```
+```
+## Configuration
+No specific configuration required
+
+## Description / How to use
+Configure landing pages under Cms > Attribute landing. An example would be Red dresses.   
+To configure the page Red dresses one would create a new landing page with as follows
+
+Title: Red Dresses.  
+url path: red-dresses.  
+For "Category ID" you use the Magento category id of the Category "Dresses".  
+For "Search Attributes" you can use add filter to create a new record, fill in the attribute code of the color attribute and for value the attribute value of "red".  
+
+The page is now available under url red-dresses and should contain all products from the selected category with color red.  
+
+You can add additional filters to further customise the page. 
+
+This plugin is compatible with Tweakwise!