minor #236 remove pre-configured platform PHP version (xabbuh)
minor #236 remove pre-configured platform PHP version (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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remove pre-configured platform PHP version

This resolves #234.

Commits
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be7d2dd remove pre-configured platform PHP version

javiereguiluz/symfony-installer,symfony/symfony-installer