Enable phpunit testing in Travis CI.

.gitignore

@@ -4,7 +4,7 @@
 !/.gitignore
 !/.editorconfig
 !/.scrutinizer.yml
-
+!/.travis.yml
 
 # Others #
 ##########

.travis.yml

@@ -0,0 +1,11 @@
+language: php php:
+  - '5.3'
+  - '5.4'
+  - '5.5'
+  - '5.6'
+  - '7.0'
+  - hhvm
+
+matrix:
+  allow_failures:
+    - php: 7.0

phpunit.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit colors="true">
+    <testsuites>
+        <testsuite name="Application Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>