Merge pull request #4 from openimagerynetwork/fixes/card

Fixes the card image and the git link

assets/styles/main.css

@@ -91,6 +91,10 @@ font-family: 'Open Sans', sans-serif;*/
     background-image: url("../graphics/github.svg");
 }
 
+.button a{
+		color: white;
+}
+
 .section--cover__links li:active{
 	background-color: #129FC5;
 }

index.html

@@ -12,11 +12,11 @@
     <meta property="og:title" content="Open Imagery Network" />
     <meta property="og:url" content="https://openimagerynetwork.github.io/" />
     <meta property="og:description" content="A discoverable network of openly licensed imagery" />
-    <meta property="og:image" content="https://openimagerynetwork.github.io/assets/graphics/OIN-tern-logo.svg" />
+    <meta property="og:image" content="https://openimagerynetwork.github.io/assets/graphics/OIN-tern-logo.png" />
     <meta name="twitter:title" content="Open Imagery Network" />
     <meta name="twitter:description" content="A discoverable network of openly licensed imagery" />
     <meta name="twitter:url" content="https://openimagerynetwork.github.io/" />
-    <meta name="twitter:image" content="https://openimagerynetwork.github.io/assets/graphics/OIN-tern-logo.svg" />
+    <meta name="twitter:image" content="https://openimagerynetwork.github.io/assets/graphics/OIN-tern-logo.png" />
 
     <!-- Favicons -->    
     <link rel="apple-touch-icon" sizes="57x57" href="assets/favicon/apple-icon-57x57.png">
@@ -96,7 +96,9 @@ <h2 class="contribute--title">Contribute to Open Imagery Network</h2>
         <p>Interested in joining this community? Open Imagery Network's mission is to develop a community around the sharing, use, and hosting of open imagery. Having a network of openly licensed imagery will enable innovative approaches in the consumption and analysis of imagery, and will give those who collect imagery an easy way to share that valuable resource. Get started by learning more about how to create storage location to share your imagery. 
         </p>
         <div class="contribute--button">
-          <a href="https://github.com/openimagerynetwork/oin-register#how-to-contribute-to-oin"><div class="button"><span class="icon github"></span>Learn more about contributing</div></a>
+          <a href="https://github.com/openimagerynetwork/oin-register">
+            <div class="button"><span class="icon github"></span>Learn more about contributing</div>
+          </a>
         </div>
       </div>
     </section>