Minor but notable commit

Mostly just added some details to the examples and clarified various
things in the help files, but made one notable change. Modified the
typeI function to no longer treat IAC differently. Now it just flips 1s
to 2s and 2s to 1s, then treats them the same as other metrics. In
order to maintain backward compatibility, pulls the results of the IAC
test out and binds them in at end. Can change later