Commit inicial con archivos existentes

vendor/mollie/polyfill-libsodium/.travis.yml

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+language: php
+dist: trusty
+
+php:
+- 7.0
+- 7.1
+- 7.2
+
+sudo: false
+
+cache:
+  directories:
+    - $HOME/.composer/cache
+
+install:
+- travis_retry composer install --no-interaction
+
+script:
+- composer validate --strict
+- find lib -name '*.php' | xargs -n 1 -P4 php -l