add js合约

数据发布预言机合约接口及测试.md

+# 一、接口描述
+# 一、接口描述
+## 1 发布事件
+### 1.1 生成发布事件的交易（未签名）
+
+**请求报文：**
+
+```json
+{
+   "jsonrpc":"2.0",
+  "method": "Chain33.CreateTransaction",
+  "params": [
+    {
+      "execer": "oracle",
+      "actionName": "EventPublish",
+      "payload": {
+        "type": "string",
+        "subType": "string",
+        "time": int64,
+        "content": "string",
+        "introduction": "string"
+      }
+    }
+  ],
+  "id": int32
+}
+```
+**参数说明：**
+
+|参数|类型|说明|
+|----|----|----|
+|type|string|事件类型|
+|subType|string|事件子类型|
+|time|int64|事件结果预计公布时间，UTC时间|
+|content|string|事件内容，例如可以用json格式表示|
+|introduction|string|事件介绍|
+
+**响应报文**
+
+```json
+{
+  "id": int32,
+  "result": "string",
+  "error": null
+}
+```
+
+**参数说明：**
+
+|参数|类型|说明|
+|----|----|----|
+|result|string|交易十六进制编码后的字符串|
+
+**示例**
+Request:
+```json
+{
+  "method": "Chain33.CreateTransaction",
+  "params": [
+    {
+      "execer": "oracle",
+      "actionName": "EventPublish",
+      "payload": {
+        "type": "football",
+        "subType": "Premier League",
+        "time": 1548084600,
+        "content": "test",
+        "introduction": "test2"
+      }
+    }
+  ],
+  "id": 0
+}
+```
+Response:
+```json
+{
+  "id": 0,
+  "result": "0a066f7261636c65123138010a2d1208666f6f7462616c6c1a0e5072656d696572204c656167756520f8ca97e2052a04746573743205746573743220a08d06309a95a2ce81b6aabf1d3a22314350794a7152427a4c4b537a504c44416845454d64666f53464450513965477448",
+  "error": null
+}
+```