Update to support configuration based Auth option

Author: robjmills

Makefile

@@ -8,6 +8,6 @@ test: vendor
 	./vendor/bin/phpunit
 
 vendor:
-	php composer.phar install
+	composer install
 
 .PHONY: build lint test

composer.json

@@ -27,8 +27,12 @@
     },
 
     "require-dev": {
-        "phpunit/phpunit": "3.7.*@dev",
-        "squizlabs/php_codesniffer": "1.4.6"
+        "squizlabs/php_codesniffer": "3.*",
+        "phpunit/phpunit": "3.7.*@dev"
+    },
+    "config": {
+        "platform": {
+            "php": "5.6"
+        }
     }
-
 }