Move apps/cory/ => apps/. Going to change import and export to support this.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4163 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/docs/guide.md

@@ -0,0 +1,16 @@
+# Tilde Friends Developer's Guide
+[Back to index](#index)
+
+A Tilde Friends application runs on the server.  To make an interesting
+application that interacts with the client, it's necessary to understand
+how the parts work together.
+
+## Hello, world!
+
+A simple starting point.  Presents `Hello, world!` in the browser when
+visited.
+
+**app.js**:
+```
+app.setDocument('<h1>Hello, world!</h1>');
+```