README.md in embulk-input-dynamodb-0.0.3 vs README.md in embulk-input-dynamodb-0.1.0

@@ -7,31 +7,47 @@
 * **Resume supported**: no
 * **Cleanup supported**: no
 
 
 ## Configuration
-- **access_key**: AWS access key (string, optional)
-- **secret_key**: AWS secret key (string, optional)  
-If you don't specify keys, I'll use the profile configuration file for the default profile.
+- **auth_method**: AWS Credential Type.
+Available values options are: `basic`, `env`, `instance`, `profile`, `properties`
+  - **basic**: AWS access key and secret access key
+  - **env**: Environment variables
+  - **instance**: EC2 Instance Metadata Service
+  - **profile**: Profile configuration file
+  - **properties**: Java system properties
+- If **auth_method** is set `basic`
+  - **access_key**: AWS access key (string, required)
+  - **secret_key**: AWS secret key (string, required)
+- If **auth_method** is set `profile`
+  - **profile_name**: The name of a local configuration profile (string, optional)
 - **region**: Region Name (string, default: ap-northeast-1)
 - **table**: Table Name (string, required)
 - **scan_limit**: DynamoDB 1time Scan Query size limit (Int, optional) 
 - **record_limit**: Max Record Search limit (Long, optional) 
+- **columns**: a key-value pairs where key is a column name and value is options for the column (required)
+  - **name**: Column name.
+  - **type**: Column values are converted to this embulk type.
+  Available values options are: `boolean`, `long`, `double`, `string`, `json`
+- **filters**: query filter (optional)
 
 ## Example
 
 ```yaml
 in:
   type: dynamodb
+  auth_method: basic
   access_key: YOUR_ACCESS_KEY
   secret_key: YOUR_SECRET_KEY
   region: ap-northeast-1
   table: YOUR_TABLE_NAME
   columns:
     - {name: ColumnA, type: long}
     - {name: ColumnB, type: double}
     - {name: ColumnC, type: string}
     - {name: ColumnD, type: boolean}
+    - {name: ColumnE, type: json}
   filters:
     - {name: ColumnA, type: long, condition: BETWEEN, value: 10000, value2: 20000}
     - {name: ColumnC, type: string, condition: EQ, value: foobar}
 
 out: