minor grammar changes and refactor yeoman template

Author: stevengum

Generator/generator-botbuilder-python/README.md

@@ -3,7 +3,7 @@
 
 ## Installation
 
-First, install [Yeoman](http://yeoman.io) and generator-botbuilder-python using [npm](https://www.npmjs.com/) (we assume you have pre-installed [node.js](https://nodejs.org/)).
+First, install [Yeoman](http://yeoman.io) and generator-botbuilder-python using [npm](https://www.npmjs.com/) (we assume you have pre-installed [Node.js](https://nodejs.org/)).
 
 ```bash
 npm install -g yo
@@ -25,7 +25,7 @@ yo botbuilder-python
 
 ## License
 
-MIT © [Microsoft]()
+MIT © [Microsoft](https://microsoft.com)
 
 
 [npm-image]: https://badge.fury.io/js/generator-botbuilder-python.svg

Generator/generator-botbuilder-python/generators/app/index.js

@@ -17,7 +17,7 @@ module.exports = class extends Generator {
     const prompts = [
       { name: 'botName', message: `What 's the name of your bot?`, default: 'sample' },
       { name: 'description', message: 'What will your bot do?', default: 'sample' },
-      { name: 'dialog', type: 'list', message: 'What default dialog do you want?', choices: ['Echo'] },
+      { name: 'dialog', type: 'list', message: 'Which default dialog do you want?', choices: ['Echo'] },
     ];
 
     return this.prompt(prompts).then(props => {

Generator/generator-botbuilder-python/generators/app/templates/main.py

@@ -55,7 +55,7 @@ async def messages(req: web.web_request) -> web.Response:
     auth_header = req.headers['Authorization'] if 'Authorization' in req.headers else ''
     try:
         return await ADAPTER.process_request(activity, auth_header, request_handler)
-    except BaseException as e:
+    except Exception as e:
         raise e
 
 
@@ -64,5 +64,5 @@ async def messages(req: web.web_request) -> web.Response:
 
 try:
     web.run_app(app, host='localhost', port=PORT)
-except BaseException as e:
+except Exception as e:
     raise e

Generator/generator-botbuilder-python/generators/app/templates/requirements.txt

@@ -1,3 +1,3 @@
 git+https://github.com/Azure/msrest-for-python@async2
-botbuilder-core>=4.0.0.a2
+botbuilder-core>=4.0.0.a3
 aiohttp>=3.0.0