Merge pull request #6 from ssnepenthe/phpunit-travis-nightly

Ensure PHPUnit 5.7.* is installed for PHP nightly on Travis.

Author: danielbachhuber

templates/plugin-travis.mustache

@@ -35,10 +35,10 @@ before_script:
   - |
     if [[ ! -z "$WP_VERSION" ]] ; then
       bash bin/install-wp-tests.sh wordpress_test root '' localhost $WP_VERSION
-      if [[ ${TRAVIS_PHP_VERSION:0:2} == "7." ]]; then
-        composer global require "phpunit/phpunit=5.7.*"
-      else
+      if [[ ${TRAVIS_PHP_VERSION:0:2} == "5." ]]; then
         composer global require "phpunit/phpunit=4.8.*"
+      else
+        composer global require "phpunit/phpunit=5.7.*"
       fi
     fi
   - |