Added checking test coverage at tavisci

.travis.yml

@@ -9,4 +9,4 @@ before_script:
   - php composer.phar install --dev
 
 script:
-  - phpunit
+  - phpunit --coverage-text

composer.json

@@ -20,7 +20,8 @@
         "knplabs/gaufrette":        "*"
     },
     "require-dev": {
-        "symfony/yaml": "2.*"
+        "symfony/yaml": "2.*",
+        "symfony/console": "2.*"
     },
     "autoload":     {
         "psr-0": {

phpunit.xml.dist

@@ -23,6 +23,7 @@
       <exclude>
         <directory>./Resources</directory>
         <directory>./Tests</directory>
+        <directory>./vendor</directory>
       </exclude>
     </whitelist>
   </filter>