3.usage.md in hyhyhy-1.0.0

- old
+ new

@@ -283,13 +283,14 @@
 ---
 
 # <b>Keyboard</b>
 
 <ol>
-    <li>Press <b>left arrow</b> and <b>right arrow</b> to navigate.</li>
+    <li>Press (<b>left arrow</b> or <b>k</b>) and (<b>right arrow</b> or <b>j</b>) to navigate.</li>
     <li>Press <b>h</b> to launch fullscreen.</li>
     <li>Press <b>ESC</b> to exit fullscreen mode.</li>
+    <li>Press <b>gg</b>/<b>shift + g</b> to move to top/bottom.</li>
     <li>Browser zooming is supported.</li>
     <li>Touch events are supported.</li>
 </ol>
 
 ---
@@ -306,6 +307,6 @@
 
 ---
 
 # <b>So...</b>
 
-Ready to <a href="https://github.com/MaciejCzyzewski/hyhyhy">contribute</a>?
+Ready to <a href="https://github.com/maciejczyzewski/hyhyhy">contribute</a>?
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