lando with no params returns error should return possible commands.

[serundeputy]

Since spinning up v3.0.0-beta.18 using the command lando with no parameters returns an error:

geoff@yep lightupthemap (11-rest-create-lights) $ lando.dev
/Users/geoff/code/lando.dev/node_modules/yargs-parser/index.js:748
  var result = parse(args.slice(), opts)
                          ^

TypeError: args.slice is not a function
    at Parser (/Users/geoff/code/lando.dev/node_modules/yargs-parser/index.js:748:27)
    at Object.exports.parseGlobals (/Users/geoff/code/lando.dev/lib/tasks.js:75:10)
    at Object.<anonymous> (/Users/geoff/code/lando.dev/lib/tasks.js:93:22)
    at Module._compile (module.js:571:32)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.require (module.js:498:17)
    at require (internal/module.js:20:19)

[pirog]

@serundeputy nice find here. rolling a hotfix release now