Imporves screenshots functionality of Behat. Can automatically create screenshots after failed or all steps.

1. Install using Composer:

   curl -sS https://getcomposer.org/installer | php
   php composer.phar require slashrsm/behat-screenshot='~1.0'

2. In the behat.yml add configuration for screenshot extension. Extenstion comes with three configuration variables, which are pretty self explanatory:

...
  extensions:
    slashrsm\screenshot\ScreenshotExtension:
      enabled_always: false
      enabled_on_fail: true
      screenshot_path: '/path/to/screenshots'

1. In the behat.yml add ScreenshotContext to the contexts section:

...
  contexts:
    ...
    - slashrsm\screenshot\ScreenshotExtension\Context\ScreenshotContext