Update link to dev-master version on Packagist

Author: ssfinney

readme.md

@@ -4,7 +4,7 @@ NOTE: This is based off a video titled ["Testing Email With Custom Assertions"](
 
 [![Latest Stable Version](https://poser.pugx.org/spinen/laravel-mail-assertions/v/stable)](https://packagist.org/packages/spinen/laravel-mail-assertions)
 [![Total Downloads](https://poser.pugx.org/spinen/laravel-mail-assertions/downloads)](https://packagist.org/packages/spinen/laravel-mail-assertions)
-[![Latest Unstable Version](https://poser.pugx.org/spinen/laravel-mail-assertions/v/unstable)](https://packagist.org/packages/spinen/laravel-mail-assertions)
+[![Latest Unstable Version](https://poser.pugx.org/spinen/laravel-mail-assertions/v/unstable)](https://packagist.org/packages/spinen/laravel-mail-assertions#dev-master)
 [![Dependency Status](https://www.versioneye.com/php/spinen:laravel-mail-assertions/0.1.1/badge.svg)](https://www.versioneye.com/php/spinen:laravel-mail-assertions/0.1.1)
 [![License](https://poser.pugx.org/spinen/laravel-mail-assertions/license)](https://packagist.org/packages/spinen/laravel-mail-assertions)