Merge pull request #148 from rwifeng/add_demos

mv php_codesniffer to dev

Author: longbai

composer.json

@@ -13,11 +13,11 @@
         }
     ],
     "require": {
-        "php": ">=5.3.3",
-        "squizlabs/php_codesniffer": "~2.3"
+        "php": ">=5.3.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.0"
+        "phpunit/phpunit": "~4.0",
+        "squizlabs/php_codesniffer": "~2.3"
     },
     "autoload": {
         "psr-4": {"Qiniu\\": "src/Qiniu"},