chore: update example yaml config

Author: yugasun

example/.gitignore

@@ -0,0 +1 @@
+requirements

example/serverless.yml

@@ -1,16 +1,20 @@
-org: orgDemo # (optional) serverless dashboard org. default is the first org you created during signup.
-app: appDemo # (optional) serverless dashboard app. default is the same as the name property.
-stage: dev # (optional) serverless dashboard stage. default is dev.
-component: flask # (required) name of the component. In that case, it's flask.
-name: flashDemo # (required) name of your flash component instance.
+org: orgDemo
+app: appDemo
+stage: dev
+component: flask
+name: flaskDemo
 
 inputs:
   src:
     # TODO: 安装python项目依赖到项目当前目录
-    hook: 'pip3 install -r requirements.txt -t ./'
-    dist: ./ # (optional) path to the source folder. default is a hello world app.
+    hook: 'pip3 install -r requirements.txt -t ./requirements'
+    dist: ./
+    include:
+      - source: ./requirements
+        prefix: ../ # prefix, can make ./requirements files/dir to ./
     exclude:
       - .env
+      - 'requirements/**'
   region: ap-guangzhou
   runtime: Python3.6
   apigatewayConf: