To-do list added to README.

README

@@ -3,18 +3,28 @@
 This is a simple pure-Ruby driver for the 10gen Mongo DB. For more information
 about Mongo, see http://www.mongodb.org.
 
+
 = Demo
 
   $ ruby examples/demo.rb
 
 Mongo must be running, of course.
 
+
 = Testing
 
   $ rake test
 
 The tests assume that the Mongo database is running on the default port.
 
+
+= To Do
+
+* Synchronization.
+
+* More tests.
+
+
 = License
 
 == Mongo Ruby Driver