Composer Doc is wrong in regards of `check` method

[eugenet8k]

The https://github.com/chaplinjs/chaplin/blob/master/docs/chaplin.composer.md#long-form says:

The check method should return true when it wishes the composition to be disposed and the compose method to be called.

But in reality https://github.com/chaplinjs/chaplin/blob/master/src/chaplin/composer.coffee#L126, it does the opposite:

    # Apply the check method
    if current and current.check composition.options
      # Mark the current composition as not stale
      current.stale false
    else
      # Remove the current composition and apply this one
      current.dispose() if current