Attempting to side-step error message when using shift

adamsmd reported an error when using `shift` and there were no arguments
to shift. I've seen this error when using an argument, such as with
`shift 2` but never have without an argument.

Moved the troublesome `shift` to within an `if` statement that will
check for the presence of additional arguments. This is my proposed
solution to #24.

Making function names match documentation

Releasing 3.0.0 - this is a breaking change if other programs used
ansi::setTitle or ansi::setIcond.

Closes #23

Correcting documentation

This closes #22

Correcting unbound variable error

This closes #21

Merge pull request #16 from kennethho/master

add missing --ideogram-stress case

Tracking recent changes

Merge pull request #13 from rk295/patch-1

Fixing the formatting

Releasing 1.1.0

Releasing 1.0.0