title: Could not able to run selenium scripts on Firefox 50.1.0 with selenium 3.3.1
body: <p>Recently I have migrated my automation scripts from selenium 2.53 to 3.3.1 version, and we could not able to run scripts in Firefox version due to below exception. i m using <strong>Firefox 50.1.0</strong> and gecko v0.15.0</p>
  
  <pre><code>Exception in: TS_Testorg.openqa.selenium.SessionNotCreatedException: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability provided, and no binary flag set on the command line (WARNING: The server did not provide any stacktrace information)
  Command duration or timeout: 0 milliseconds
  </code></pre>