CMB2 as Composer Library

composer.json

{
 "require": {
    "php": ">=5.3.0",
    "composer/installers": "v1.0.12",
    "webdevstudios/cmb2": "dev-master",
  },
  "autoload": {
    "files": ["vendor/cmb2/init.php"]
  },
  "extra": {
    "installer-paths": {
      "vendor/{$name}/": ["webdevstudios/cmb2"]
    }
  } 
}

You can change vendor if you use a custom vendor-dir:

"config": {
  "vendor-dir": "lib"
}

Thanks for putting this up. Saved me some time :)

Awesome, thanks!

  [Seld\JsonLint\ParsingException]
  "./composer.json" does not contain valid JSON
  Parse error on line 5:
  ...2": "dev-master",  },  "autoload": {
  ---------------------^
  Expected: 'STRING' - It appears you have an extra trailing comma

Just delete "," on line 5 to fix this error.