Remove php 5.4 from list of supported

Author: misterion

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-    - 5.4
     - 5.5
 
 before_script:
@@ -12,4 +11,4 @@ script: phpunit --coverage-text --exclude-group ProcessTitle
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar
-  - php ocular.phar code-coverage:upload --format=php-clover ./build/coverage.clover
+  - php ocular.phar code-coverage:upload --format=php-clover ./build/coverage.clover