Minor readme fixes.

dmitry-ivanov · dmitry-ivanov · commit c87ee04f18e9 · 2018-01-12T15:38:28.000+02:00
diff --git a/README.md b/README.md
@@ -40,7 +40,7 @@ Prevents overlapping for Laravel console commands.
 1. Install package through `composer`:
 
     ```shell
-    composer require illuminated/console-mutex
+    composer require "illuminated/console-mutex:5.5.*"
     ```
 
 2. Use `Illuminated\Console\WithoutOverlapping` trait:
