Add ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

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+### Check List
+
+Thanks for considering to open an issue. Before you submit your issue, please confirm these boxes are checked.
+
+- [ ] I have read the [README.md](https://github.com/mmoaay/Bamboots/blob/master/README.md), but there is no information I need.
+- [ ] I have searched in [existing issues](https://github.com/mmoaay/Bamboots/issues?utf8=%E2%9C%93&q=is%3Aissue), but did find a same one.
+
+### Issue Description
+
+#### Description
+
+[Tell us about the issue]
+
+#### Reproduce
+
+[The steps to reproduce this issue. What are the parameters, where did you put your code, etc.]
+
+#### Other Comment
+
+[Add anything else here]