wiki: add default.tmpl and index.md

Change-Id: Ic9cec931ed0c5737fe4bf68326b26c6d42757f3c
diff --git a/default.tmpl b/default.tmpl
new file mode 100644
index 0000000..d57fc0b
--- /dev/null
+++ b/default.tmpl
@@ -0,0 +1,3 @@
+{{define "layout"}}
+{{doclayout .}}
+{{end}}
diff --git a/index.md b/index.md
new file mode 100644
index 0000000..0d1f5f6
--- /dev/null
+++ b/index.md
@@ -0,0 +1,15 @@
+---
+title: Index
+---
+
+<div id="wikiindex">
+
+<ul>
+{{- range pages "/wiki/*.md" -}}
+{{- if and .title (ne .URL "/wiki/") -}}
+<li class="wikititle"><a href="{{.URL}}">{{.title}}</a></p>
+{{end -}}
+{{- end -}}
+</ul>
+
+</div>