try running unit tests against mysql in travis

.travis.yml

@@ -19,6 +19,7 @@ before_script:
 script:
   - php artisan database:create --reset
   - php artisan migrate:refresh --seed
+  - cp phpunit.travis.xml phpunit.xml
   - vendor/bin/phpunit --debug --verbose
 
 after_success:

phpunit.travis.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit bootstrap="bootstrap/autoload.php"
+         colors="true"
+         processIsolation="false"
+         stopOnFailure="true"
+         convertErrorsToExceptions="false"
+         convertNoticesToExceptions="false"
+         convertWarningsToExceptions="false"
+         beStrictAboutOutputDuringTests="false"
+         beStrictAboutTestsThatDoNotTestAnything="false">
+    <testsuites>
+        <testsuite name="Application Test Suite">
+            <directory suffix="Test.php">./tests</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./app</directory>
+        </whitelist>
+    </filter>
+    <php>
+        <!--<env name="APP_ENV" value="testing"/>
+        <env name="APP_KEY" value="base64:ve66Z5Kt/zTN3p++0zOPu854PHfZkwJE5VuoFAlzHtI="/>
+        <env name="APP_DEBUG" value="true"/>
+        <env name="APP_LOG_LEVEL" value="debug"/>
+        <env name="DB_CONNECTION" value="memory"/>
+        <env name="CACHE_DRIVER" value="array"/>
+        <env name="SESSION_DRIVER" value="array"/>
+        <env name="QUEUE_DRIVER" value="sync"/>-->
+        <ini name="error_reporting" value="E_ALL"/>
+        <ini name="display_errors" value="On"/>
+        <ini name="display_startup_errors" value="On"/>
+    </php>
+</phpunit>