fix: service not exist bug

Author: yugasun

README.md

@@ -1,5 +1,7 @@
 # tencent-component-toolkit
 
+[![npm](https://img.shields.io/npm/v/tencent-component-toolkit)](http://www.npmtrends.com/tencent-component-toolkit)
+[![NPM downloads](http://img.shields.io/npm/dm/tencent-component-toolkit.svg?style=flat-square)](http://www.npmtrends.com/tencent-component-toolkit)
 [![Build Status](https://travis-ci.com/serverless-tencent/tencent-component-toolkit.svg?branch=master)](https://travis-ci.com/serverless-tencent/tencent-component-toolkit)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 
@@ -8,11 +10,9 @@ Tencent component toolkit.
 ## Usage
 
 ```bash
-$ git clone https://github.com/serverless-tencent/release-ci-template my-project
+$ npm install tencent-component-toolkit --save
 ```
 
-Change `npmPublish` to `true` for npm module project.
-
 ## License
 
 MIT License

src/baas/apigw/index.js

@@ -32,27 +32,32 @@ class Apigw {
     } = serviceConf
     let serviceCreated = false
     let detail
+    let exist = false
     if (serviceId) {
-      detail = await this.request({
-        Action: 'DescribeService',
-        serviceId: serviceId
-      })
-      if (
-        !(
-          serviceName === detail.serviceName &&
-          serviceDesc === detail.serviceDesc &&
-          protocols === detail.protocol
-        )
-      ) {
-        await this.request({
-          Action: 'ModifyService',
-          serviceId,
-          serviceDesc: serviceDesc || detail.serviceDesc,
-          serviceName: serviceName || detail.serviceName,
-          protocol: protocols
+      try {
+        detail = await this.request({
+          Action: 'DescribeService',
+          serviceId: serviceId
         })
-      }
-    } else {
+        exist = true
+        if (
+          !(
+            serviceName === detail.serviceName &&
+            serviceDesc === detail.serviceDesc &&
+            protocols === detail.protocol
+          )
+        ) {
+          await this.request({
+            Action: 'ModifyService',
+            serviceId,
+            serviceDesc: serviceDesc || detail.serviceDesc,
+            serviceName: serviceName || detail.serviceName,
+            protocol: protocols
+          })
+        }
+      } catch (e) {}
+    }
+    if (!exist) {
       const createData = await this.request({
         Action: 'CreateService',
         serviceName: serviceName || 'Serverless_Framework',