minor #2769 Update .travis.yml (andreybolonin)
minor #2769 Update .travis.yml (andreybolonin)

This PR was submitted for the 2.x branch but it was merged into the 1.x branch instead (closes #2769).

Discussion
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Update .travis.yml

Commits
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721fb3f6 Update .travis.yml

nicolas-grekas/Twig,nicolas-grekas/Twig,nicolas-grekas/Twig,twigphp/Twig,nicolas-grekas/Twig,nicolas-grekas/Twig,twigphp/Twig,twigphp/Twig