About koans
About first class functions

Signed-off-by: David Laing <david@davidlaing.com>
Completed first draft

Signed-off-by: David Laing <david@davidlaing.com>
Include continuation examples

Signed-off-by: David Laing <david@davidlaing.com>
Add warning message for IE users

Signed-off-by: David Laing <david@davidlaing.com>