generate api index page

scripts/docs/processors/index-page.js

@@ -0,0 +1,18 @@
+module.exports = function indexPage() {
+  return {
+    name: 'index-page',
+    description: 'Create documentation index page',
+    version: 'nightly',
+    $runAfter: ['adding-extra-docs'],
+    $runBefore: ['extra-docs-added'],
+    $process: function(docs) {
+      docs.push({
+        docType: 'index-page',
+        id: 'index-page',
+        currentVersion: this.version,
+        template: 'api_index.template.html',
+        outputPath: 'index.md'
+      });
+    }
+  }
+};