Updated travis config to skip composer tests for php 5.2 as it is not supported.

Author: rfmeier

.travis.yml

@@ -90,9 +90,7 @@ script:
     if [[ "$NPM_TESTS" == "1" ]]; then
       npm test
     else
-      if [[ "$TRAVIS_PHP_VERSION" == "5.2" ]]; then
-        /home/travis/.phpenv/versions/5.4/bin/composer phpcs
-      else
+      if [[ "$TRAVIS_PHP_VERSION" != "5.2" ]]; then
         composer phpcs
       fi