title: Retrieve back navigation action from react router
body: <p>In the application I'm building I chose react-router to handle the navigation flow, but I need to track the event of navigating back on the browser, so when you try to load the component in the new render I need to know if the user has landed here by pressing the back button.
  What would be the best way to track it? I'm pretty sure that is using the History API, but couldn't find any straight way to check that, and it feels like it should be pretty easy given how the library works.</p>
  
  <p>Anyone that could shed some light on the matter would be very welcomed! Thanks!</p>