Input Update

Update implementation to allow determination of input pins.
Partial output determination.

Compilation Tests to Hammer Out Syntax

No syntax errors. Everything compiles using Red Hat MSPGCC.

Update README for Usage

Updating the readme to show the compiler/toolchain used for the MSP430
project.

I Really Hate Markdown...

Why does formatting have to be so annoying?!?

Set Input Changes

Original logic didn't make sense (I made them outputs instead of
inputs), so here is new logic to replace it.

Also, added descriptions about how the function is designed to work and
the associated return values.