minor #2672 Reword installation docs (fabpot)
minor #2672 Reword installation docs (fabpot)

This PR was merged into the 2.x branch.

Discussion
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Reword installation docs

One must use Composer with Twig 2.x.

Commits
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ff9070f6 reworded installation docs

twigphp/Twig,twigphp/Twig,twigphp/Twig