Update .travis.yml

.travis.yml

@@ -1,17 +1,18 @@
 language: php
 php:
-  - 5.2
-  - 5.3
   - 5.4
   - 5.6
   - 7.0
   - 7.1
   - hhvm
-install: "composer install"
-script: "composer run-script test -- --colors --coverage-text"
 matrix:
   include:
     - php: 5.2
       dist: precise
     - php: 5.3
-      dist: precise
+      dist: precise
+install: "if [ `command -v composer` ]; then composer install; else curl -sSfL https://phar.phpunit.de/phpunit-4.phar -o ~/phpunit.phar; fi"
+script: |
+  if [ `command -v composer` ]; then X="composer run-script test --"; else X="~/phpunit.phar"; fi; "$X --colors --coverage-text"
+
+