strongloop-license
==================

Validates StrongLoop licenses.

## Usage

The simplest case is to declare a simple license requirement that takes the
default action if the license check fails.

### Examples

#### String Form
```js
require('strongloop-license')('some-product:some-feature=Special Sauce');
```

#### Options Form
```js
require('strongloop-license')({
  product: 'some-product',
  feature: 'some-feature',
  label: 'Special Sauce',
});
```

#### Exit On Failure
```js
require('strongloop-license')('core:feature', 'EXIT');
```

### API

#### module(opts, [callback])

* `opts`: an object or a string
  * string: a string of the format `product[:feature][=label]`
  * object: an object with the following properties:
    * `product`: product name
    * `feature`: feature name
    * `label`: friendly name for logs instead of product:feature
    * `now`: time to compare license against (defaults to `Date.now()`
    * `interval`: repeat license check ever `interval` ms (default to `0`, disabled)
* `callback`: function or String
  * function: `function(err, name, result)`
    * `result` is `false` or the license details of the matching license
  * string: name of builtin handler: `'NOOP'`, `'CONSOLE'`, `'EXIT'`

#### module.CONSOLE

Default handler, prints a message to stderr if a license match is not found or
a message to stdout stating when the license is valid.