Run PHP 7.1 on Travis

- Using nightly (as of now it's PHP 7.1 alpha)
- Force guzzle to be at least 5.3.1 (which fix some bugs in PHP 7)

.travis.yml

@@ -20,6 +20,7 @@ php:
     - 5.5
     - 5.6
     - 7.0
+    - nightly
     - hhvm
 
 env:

bin/symfony_requirements

@@ -13,7 +13,7 @@ echo '> PHP is using the following php.ini file:'.PHP_EOL;
 if ($iniPath) {
     echo_style('green', '  '.$iniPath);
 } else {
-    echo_style('warning', '  WARNING: No configuration file (php.ini) used by PHP!');
+    echo_style('yellow', '  WARNING: No configuration file (php.ini) used by PHP!');
 }
 
 echo PHP_EOL.PHP_EOL;

composer.json

@@ -74,7 +74,7 @@
         "grandt/phpepub": "~4.0",
         "wallabag/php-mobi": "~1.0.0",
         "kphoen/rulerz-bundle": "~0.10",
-        "guzzlehttp/guzzle": "^5.2.0",
+        "guzzlehttp/guzzle": "^5.3.1",
         "doctrine/doctrine-migrations-bundle": "^1.0",
         "paragonie/random_compat": "~1.0",
         "craue/config-bundle": "~1.4",