No Empty Command Scripts - v0.7.1

Changelog

c0a123e Errors on empty command script
53fdc75 Adds line:col to parse errors; Adds TokenUnknownRune
9537f38 Updates install section for brew and compiled binaries
5f20709 Adds NPM Package + Updates README
8fefa67 Adds an Archlinux PKGBUILD (#2)
bbeca28 Adds Archlinux Installation Info to README
9a1b3bb Add Archlinux installation info

No Empty Command Scripts

Adds a check to ensure that command scripts are not empty.

Runfile

##
# Empty command script 
empty:

hello:
    echo "Hello, World"

output

$ run hello

run: 5.0: command 'empty' contains an empty script.