Added blog post link

Author: luisdalmolin

README.md

@@ -18,6 +18,8 @@ A few things we consider is missing when using joins which are very powerful Elo
 * Ability to query relationship existence using joins instead of where exists;
 * Ability to easily sort results based on columns or aggregations from related tables;
 
+You can read a more detailed explanation on the problems this package solves on [this blog post](https://kirschbaumdevelopment.com/news-articles/adding-some-laravel-magic-to-your-eloquent-joins).
+
 ## Installation
 
 You can install the package via composer: