Add dev requirements

Dan Richelson · Dan Richelson · commit 5cfbc9c250a1 · 2016-07-23T13:58:10.000-07:00
diff --git a/composer.json b/composer.json
@@ -17,6 +17,8 @@
         "php": ">=5.5"
     },
     "require-dev": {
+        "guzzlehttp/guzzle": "6.2.1",
+        "kevinrob/guzzle-cache-middleware": "1.4.1",
         "phpunit/phpunit": "4.8.26",
         "phpdocumentor/phpdocumentor": "2.*",
         "predis/predis": "1.0.*",
