Working completion for zsh and bash
`--copmletion` option support

Closes #57
Merge pull request #85 from floatdrop/master

Indirect README update from glob-watcher
add temporary shirt link
Update README.md
Fixing codestyle, simplify completition.js
Merge pull request #83 from floatdrop/autocompletion

Working completion for zsh and bash
Quick fix bug in autocompletion