adding readme

Author: Mte90

readme.md

@@ -0,0 +1,23 @@
+# How to use 
+
+## Output structure
+`Kind of content | post id | post type/taxonomy`
+
+## Commands
+To get the id and post type by url:
+`wp get-by-url --skip-plugins --skip-themes http://demo.test/2018/10/your-post`
+Output:
+`post | 33 | post`
+
+To get the id and taxonomy by url:
+`wp get-by-url --skip-plugins --skip-themes http://demo.test/tag/test/`
+Output:
+`term | 2 | post_tag`
+
+### Why skip plugins and themes
+
+It is a good practice in WP CLI when you have to execute commands that are heavy of resources to not load plugins and themes for a lot of reasons.
+
+### Why the separator is pipe?
+
+In that way is more easy to do scri