warning about unmaintained status of project

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@@ -31,6 +31,11 @@ <h2 id="project_tagline">A PHP opcode cache / optimizer / accelerator</h2>
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+        <h3>IMPORTANT</h3>
+        <p>This project hasn't been maintained since 2012. <b>It has serious bugs</b> and nobody has been fixing them for years.</p>
+        <p>So before you use it, be sure you know what you are doing.</p>
+        <p>You may want to use <a href="https://pecl.php.net/package/ZendOpcache">Opcache</a> instead, or simply update PHP to version 5.5+, which come with Opcache bundled so you don't need to install any opcode cache at all.</p>
+
         <h3>Welcome to the eAccelerator project</h3>
 
 <p>eAccelerator is a free open-source PHP accelerator &amp; optimizer. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times.</p>