use devicon icons for buttons

Author: amacado

docs/index.html

@@ -89,13 +89,13 @@ <h4>SVG versions</h4>
       <h3>Github Repo</h3>
       <h5>If you prefer a local install, you can download all the files on the github repo.</h5>
       <p class="download">
-        <a href="https://github.com/devicons/devicon/archive/master.zip"><i class="icon-github"></i>DOWNLOAD</a>
+        <a href="https://github.com/devicons/devicon/archive/master.zip"><i class="devicon-github-original"></i>DOWNLOAD</a>
       </p>
       <p class="download">
-        <a href="https://github.com/devicons/devicon/" target="blank"><i class="icon-github"></i>GO TO REPO</a>
+        <a href="https://github.com/devicons/devicon/" target="blank"><i class="devicon-github-original"></i>GO TO REPO</a>
       </p>
       <p class="download">
-        <a href="https://github.com/devicons/devicon/blob/master/CONTRIBUTING.md" target="blank"><i class="icon-github"></i>CONTRIBUTE</a>
+        <a href="https://github.com/devicons/devicon/blob/master/CONTRIBUTING.md" target="blank"><i class="devicon-github-original"></i>CONTRIBUTE</a>
       </p>
 
       <p class="footer">