text: Title: Typo on documentation
  Body: from documentation in testing bot section:
  
  ```
  py.test --driver TestingBot --capability browserName firefox --capability browserName 39 --capability platform WIN8
  ```
  
  correction should be 
  
  ```
  py.test --driver TestingBot --capability browserName firefox --capability version 39 --capability platform WIN8
  ```
  