Documentation

It is just a little bit, but I wrote a document of decanter. I have been published in the Dropbox of me.
* English https://dl.dropboxusercontent.com/u/71550553/decanter/en/index.html
* Japanese https://dl.dropboxusercontent.com/u/71550553/decanter/ja/index.html

If a document rich, I want to publish a server somewhere by changing from me the author.