updated dependencies for dev

Author: vimishor

composer.json

@@ -20,8 +20,8 @@
         "kriswallsmith/buzz": "0.10"
     },
     "require-dev": {
-        "phpunit/phpunit": "3.7.*",
-        "satooshi/php-coveralls": "dev-master"
+        "phpunit/phpunit": "~3.7",
+        "satooshi/php-coveralls": "~0.6"
     },
     "autoload": {
         "psr-0": { "Bitbucket\\": "lib/" }