Consider slimming the header

[cfjedimaster]

This is probably a bit picky, but I figured I'd post it to see what other's thought. Look at the amount of space used for the header here:

Maybe it should be slimmed down a bit? I don't plan on doing "stuff" in the shell, but I know some folks will, so having more space to enter commands and such may be nice.

[rabbah]

The footer seems to have expanded also in recent releases.

[rabbah]

Issue moved to ibm-functions/shell #37 via ZenHub