Add style, use foreground & background colors

[willrstern]

addresses https://github.com/jaanauati/hyper-search/issues/15

• break out styles into their own file
• add extra style to enhance the look of search
• support user background/foreground colors
• change term.scrollDisp to term.scrollLines

With #000 background, #fff foreground

With #fff background, #000 foreground

[willrstern]

@jaanauati Sorry about that. I think my editor tried to format tabs to spaces or something like that...here you go.

[jaanauati]

this looks great.... merged and published (v0.0.9).

Thanks!.