Add the Symfony CSSSelector dependency to match the example usage
minor #900 Add the Symfony CSSSelector dependency to match the example usage (tzi)

This PR was merged into the 1.2.x-dev branch.

Discussion
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Add the Symfony CSSSelector dependency to match the example usage

Hi!

I added the Symfony CSSSelector dependency to match with the example usage & the crawler presentation.

Cheers,
Thomas.

Commits
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4c7e740 Add the Symfony CSSSelector dependency to match the example usage