message: Issue template example
diff: Please make sure to read the Pull Request Guidelines:
  https://github.com/vuejs/vue/blob/dev/.github/CONTRIBUTING.md#pull-request-guidelines
  -->
  +
  +<!-- ISSUE TEMPLATE -->
  +**Please check if the PR fulfills these requirements**
  +- [ ] Do not submit PRs against the master branch.
  +- [ ] Checkout a topic branch from the relevant branch, e.g. dev, and merge back against that branch.
  +- [ ] The tests are running: https://github.com/vuejs/vue/blob/dev/.github/CONTRIBUTING.md#development-setup
  +
  +If adding new feature:
  +- [ ] Added accompanying test case.
  +- [ ] In the commit message, provide convincing reason to add this feature.
  + Ideally you should open a suggestion issue first and have it greenlighted before working on it.
  +
  +If fixing a bug:
  +- [ ] If you are resolving a special issue, add (fix #xxxx[,#xxx]) (#xxxx is the issue id) in your PR title
  +- [ ] Provide detailed description of the bug in the PR. Live demo preferred.
  +- [ ] Add appropriate test coverage if applicable.
  +
  +**What kind of change does this PR introduce?** (check at least one with "x")
  +```
  +[ ] Bugfix
  +[ ] Feature
  +[ ] Code style update
  +[ ] Refactoring
  +[ ] Build related changes
  +[ ] Other... Please describe:
  +```
  +
  +**Does this PR introduce a breaking change?** (check one with "x")
  +```
  +[ ] Yes
  +[ ] No
  +```
  +
  +If this PR contains a breaking change, please describe the impact and migration path for existing applications:
  +
  +**Other information**:
  