create CLI version of the library

[Kikobeats]

Thank you for this code, works fine! But Instead of run the command manually could be better invoke a CLI command for do the process. I can do it at some point in future :)

[Kikobeats]

Just adding in package.json:

"bin": {
      "bigout": "./bigout.js"
  },

should be works but I don't understand why this happens:

bigout
/usr/local/bin/bigout: line 1: //: is a directory
/usr/local/bin/bigout: line 2: var: command not found
/usr/local/bin/bigout: line 4: syntax error near unexpected token `{'
/usr/local/bin/bigout: line 4: `if (argslen < 5) {'