chore: use phpunit from composer not travis

Author: gsdevme

.travis.yml

@@ -15,5 +15,5 @@ before_script:
   - ./src/BeSimple/SoapClient/Tests/bin/axis.sh
 
 script:
-  - phpunit --coverage-text
+  - vendor/bin/phpunit --coverage-text
 

composer.json

@@ -39,7 +39,8 @@
         "ext-mcrypt": "*",
         "mikey179/vfsStream": "~1.0",
         "symfony/filesystem": "^2.8",
-        "symfony/process": "^2.8"
+        "symfony/process": "^2.8",
+        "phpunit/phpunit": "^5.3"
     },
     "autoload": {
         "psr-0": { "BeSimple\\": "src/" }