Add ext-mysqli requirement.

dustingraham · dustingraham · commit d665e8983f6e · 2016-05-19T16:42:48.000-07:00
diff --git a/README.md b/README.md
@@ -167,6 +167,8 @@ The recommended way to install this library is through Composer.
 
     $ composer require dustingraham/react-mysql
 
+PHP 5.4 and the php ext-mysqli extension is required.
+
 ## Credits
 
 Much appreciation to the hard work over at [reactphp/react](https://github.com/reactphp/react).
diff --git a/composer.json b/composer.json
@@ -8,6 +8,7 @@
     ],
     "require": {
         "php": ">=5.4.0",
+        "ext-mysqli": "*",
         "react/event-loop": "^0.4.2",
         "react/promise": "^2.4"
     },
diff --git a/composer.lock b/composer.lock
