Add VSTS CI badge to our package.json manifest (microsoft#2042)

Author: d3r3kk

package.json

@@ -18,16 +18,16 @@
  },
  "qna": "https://stackoverflow.com/questions/tagged/visual-studio-code+python",
  "badges": [
+ {
+ "url": "https://vscode-python.visualstudio.com/VSCode-Python/_apis/build/status/VSCode-Python-Rolling-CI?branchName=master",
+ "href": "https://vscode-python.visualstudio.com/VSCode-Python/VSCode-Python%20Team/_build/index?context=allDefinitions&path=&definitionId=9",
+ "description": "Continuous integration (VSTS)"
+ },
  {
  "url": "https://travis-ci.org/Microsoft/vscode-python.svg?branch=master",
  "href": "https://travis-ci.org/Microsoft/vscode-python",
  "description": "Continuous integration (Travis)"
  },
- {
- "url": "https://ci.appveyor.com/api/projects/status/s0pt8d79gqw222j7?svg=true",
- "href": "https://ci.appveyor.com/project/DonJayamanne/vscode-python-v3vd6/branch/master",
- "description": "Continuous integration (AppVeyor)"
- },
  {
  "url": "https://codecov.io/gh/Microsoft/vscode-python/branch/master/graph/badge.svg",
  "href": "https://codecov.io/gh/Microsoft/vscode-python",