Upgrade termui

Merge pull request #51 from coolaj86/patch-1

use godirwalk v1.7.8

Merge pull request #48 from coolaj86/patch-1

fix #47: update godirwalk to v1.7.4

Merge pull request #44 from iu0v1/master

fix for #43

Merge pull request #38 from coolaj86/readme-for-noobs

Readme for noobs

Merge pull request #40 from coolaj86/go-mod

add go.mod for package definition and version tracking