added options for: colors, hiding, sha1 length, orientation, git dir, etc.

Made a bunch of miscellaneous changes (not sure I like how I did some things, e.g. color schemes) so I thought I'd let you know about them.    I wanted more control over what was displayed for use with tutorials.    Video:   https://www.youtube.com/watch?v=xz8oLPuLxok

By the way, nice tool!  Thanks!