Improved Travis config (#1)

Improved Travis config

.travis.yml

@@ -6,7 +6,7 @@ php:
   - 5.6
   - 7.0
   - 7.1
-  - master
+  - nightly
 
 before_install:
   - composer self-update
@@ -15,10 +15,7 @@ install:
   - composer install --no-interaction --prefer-dist --no-scripts --no-progress --no-suggest --optimize-autoloader --classmap-authoritative
 
 script:
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then vendor/bin/phing ci; fi
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "5.6" ]]; then vendor/bin/phing; fi # Without code coverage
-  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.0" ]]; then vendor/bin/phing; fi # Without code coverage
-  - if [[ ${TRAVIS_PHP_VERSION} == "master" ]]; then vendor/bin/phing; fi # Without code coverage
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then vendor/bin/phing ci; else vendor/bin/phing; fi # Code coverage test
 
 after_script:
     - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.1" ]]; then wget https://github.com/satooshi/php-coveralls/releases/download/v1.0.1/coveralls.phar; fi