adding fusion docs and tests

[SVN r34920]

example/extension/Jamfile.v2

@@ -0,0 +1,18 @@
+#==============================================================================
+#    Copyright (c) 2003-2006 Joel de Guzman
+#    Copyright (c) 2006 Dan Marsden
+#
+#   Use, modification and distribution is subject to the Boost Software
+#   License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+#   http://www.boost.org/LICENSE_1_0.txt)
+#==============================================================================
+
+# bring in rules for testing
+import testing ;
+
+{
+    test-suite example :
+
+    [ run test_example.cpp :  :  :  : ] ;
+}
+