minor #1482 Update documentation to add cache explaination (jlHertel)
minor #1482 Update documentation to add cache explaination (jlHertel)

This PR was merged into the 2.1.x-dev branch.

Discussion
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Update documentation to add cache explaination

This updates the documentation explaining how to setup any cache that implements the Doctrine interface. As the Symfony documentation don't clearly shows how to do this, I intend to add it here.

Commits
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2e0f7d3 Update documentation to add cache explaination

romainneutron/Silex,romainneutron/Silex,romainneutron/Silex,silexphp/Silex,gencer/Silex