add "Click to Edit" button

Author: stephenplusplus

docs/site/components/faq/faq.html

@@ -1,3 +1,16 @@
-<div subpage title="Frequently Asked Questions">
+<script id="faq-header.html" type="text/ng-template">
+  <header header title="Frequently Asked Questions">
+    <div class="versions header--gh-edit-btn">
+      <a href="https://github.com/GoogleCloudPlatform/gcloud-node/edit/master/docs/faq.md" class="v-btn">
+        <img src="site/img/icon-link-github.svg" />
+        Edit on GitHub
+      </a>
+    </div>
+  </header>
+</script>
+
+<div subpage
+  header-templateUrl="faq-header.html"
+  title="Frequently Asked Questions">
   <btf-markdown ng-include="'faq.md'"></btf-markdown>
 </div>

docs/site/components/troubleshooting/troubleshooting.html

@@ -1,3 +1,16 @@
-<div subpage title="Troubleshooting">
+<script id="troubleshooting-header.html" type="text/ng-template">
+  <header header title="Troubleshooting">
+    <div class="versions header--gh-edit-btn">
+      <a href="https://github.com/GoogleCloudPlatform/gcloud-node/edit/master/docs/troubleshooting.md" class="v-btn">
+        <img src="site/img/icon-link-github.svg" />
+        Edit on GitHub
+      </a>
+    </div>
+  </header>
+</script>
+
+<div subpage
+  header-templateUrl="troubleshooting-header.html"
+  title="Troubleshooting">
   <btf-markdown ng-include="'troubleshooting.md'"></btf-markdown>
 </div>

docs/site/css/main.css

@@ -1107,6 +1107,13 @@ h2, h3 {
         top: 7em;
     }
 
+    /*
+     GitHub Edit Heade Button
+     */
+    .header--gh-edit-btn {
+      top: 8em;
+    }
+
     /*
      Content
     */