Merge pull request #116 from spekulatius/adding-phpunit-to-dev-requirements

adding phpunit

Author: oscarotero

composer.json

@@ -23,7 +23,8 @@
     },
     "require-dev": {
         "guzzlehttp/guzzle": "5.x",
-        "sstalle/php7cc": "^1.0"
+        "sstalle/php7cc": "^1.0",
+        "phpunit/phpunit": "*"
     },
     "suggest": {
         "guzzlehttp/guzzle@5.x": "To use Guzzle5 request resolver"