Update Documentation

[bbrk24]

There doesn't seem to be any documentation on block comments or increment/decrement statements, even though the issues for them were closed.

[jwfxpr]

Partially addressed this is #32, which documents comments including block comments.

Will also add increment and decrement to docs today or tomorrow!

[jwfxpr]

@bbrk24 #32 now documents comments as well as inc/dec expressions 👍

[zackradisic]

Fixed by #32