put the basewiki index and sandbox pages in a subdir of the doc wiki

doc/basewiki.mdwn

@@ -4,8 +4,8 @@ versions.
 
 It currently includes these pages:
 
-* index (not the one in this wiki)
-* sandbox (not the on in this wiki)
+* [[index]]
+* [[sandbox]]
 * [[blog]]
 * [[HelpOnFormatting]]
 * [[markdown]]

doc/basewiki/index.mdwn

@@ -0,0 +1,7 @@
+Welcome to your new wiki.
+
+All wikis are supposed to have a [[SandBox]], so this one does too.
+
+----
+
+This wiki is powered by [ikiwiki](http://ikiwiki.info).

doc/basewiki/sandbox.mdwn

@@ -0,0 +1,32 @@
+This is the SandBox, a page anyone can edit to learn how to use the wiki.
+
+----
+
+Here's a paragraph.
+
+Here's another one with *emphasised* text.
+
+# Header
+
+## Subheader
+
+> This is a blockquote.
+>
+> This is the first level of quoting.
+>
+> > This is nested blockquote.
+>
+> Back to the first level.
+
+Numbered list 
+
+1. First item.
+1. Another.
+1. And another..
+
+Bulleted list
+
+* *item*
+* item
+
+[[WikiLink]]