README.md in ncmb-ruby-client-0.1.3 vs README.md in ncmb-ruby-client-0.1.4

- old
+ new

@@ -1,9 +1,9 @@
 ncmb-ruby-client
 ================
 
-A simple Ruby client for the nifty cloud mobile backend REST API
+A simple Ruby client for the nifty cloud mobile backend REST API. This is developer preview.
 
 Basic Usage
 -----------
 
 ```
@@ -45,6 +45,10 @@
 else
   puts "Push save faild."
 end
 ```
 
-[ニフティクラウド mobile backend](http://mb.cloud.nifty.com/)
+## License
+
+MIT.
+
+[ニフクラ mobile backend](http://mb.cloud.nifty.com/)