update docs

LICENSE

@@ -0,0 +1,22 @@
+The MIT License
+
+Copyright (c) 2013 Tatsuo Kaniwa
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -1,4 +1,40 @@
 GMO
 ====
 
-GMO is a Node.js client library for the GMO Payment Platform, supporting the PG Multi Payment API, exec transactions, register users, and so on.
+GMO is a Node.js client library for the GMO Payment Platform, supporting the PG Multi Payment API, exec transactions, register users, and so on.
+
+Installation
+---
+
+```bash
+npm install gmo
+```
+
+Usage
+---
+
+```coffeescript
+gmo = require "gmo"
+
+shopApi = new gmo.ShopAPI(
+  host: "hoge.mul-pay.jp"
+  shop_id: "shop_id"
+  shop_pass: "shop_pass"
+)
+
+option =
+  order_id: order_id
+  job_cd: "AUTH"
+  amount: "100"
+
+shopApi.entryTran option , (err, res) ->
+  if err
+    console.log err
+  if res
+    console.log res
+
+```
+
+Contributors
+---
+Patches contributed by [those people](https://github.com/t-k/gmo-payment-node/contributors).