Add RLGym to home page

Author: lucas-emery

index.html

@@ -130,6 +130,16 @@ <h5 class="card-title">JavaScript</h5>
                         </div>
                     </div>
                 </a>
+
+                <a href="https://rlgym.github.io/">
+                    <div class="card">
+                        <div class="card-body">
+                            <img src="rlgym.png" class="card-image-right">
+                            <h5 class="card-title">RLGym</h5>
+                            <p>Make a <em>sentient</em> Machine Learning bot with RLGym!</p>
+                        </div>
+                    </div>
+                </a>
             </div>
 
         </div>