Generic exception to throw on API client errors.

Located in /imagestotext.php (line 43)

Exception
   |
   --ImagesToText_Exception
      |
      --ImagesToText_ClientException

Class	Description
ImagesToText_AccessDeniedException	Exception to throw on rejected login attemts due to invalid ITT credentials, low balance, or when account being banned.
ImagesToText_InvalidCaptchaException	Exception to throw on invalid CAPTCHA image payload: on empty images, on images too big, on non-image payloads.