rocksdb/issue_template.md

> Note: Please use Issues only for bug reports. For questions, discussions, feature requests, etc. post to dev group: https://www.facebook.com/groups/rocksdb.dev

### Expected behavior

### Actual behavior

### Steps to reproduce the behavior
Add a template for issues Summary: This template reminds the users to use issues only for bug reports. The template is written according to the github guidelines at https://help.github.com/articles/creating-an-issue-template-for-your-repository/ Closes https://github.com/facebook/rocksdb/pull/2948 Differential Revision: D5943558 Pulled By: maysamyabandeh fbshipit-source-id: c83b5d211ea8e334107141967689b2f0c453bbc9 2017-09-29 18:33:32 +00:00			`> Note: Please use Issues only for bug reports. For questions, discussions, feature requests, etc. post to dev group: https://www.facebook.com/groups/rocksdb.dev`

			`### Expected behavior`

			`### Actual behavior`

			`### Steps to reproduce the behavior`