DOC: creating CONTRIBUTING.md from contributing.rst
## Pandas Issue Submission Template

This template will help you and us respond to your issues in an efficient and timely manner.
Please fill out all sections and use [github markdown for code blocks](https://help.github.com/articles/basic-writing-and-formatting-syntax/)
#### Actual Behavior
#### Expected Behavior
#### output of `pd.show_versions()`

so this is what the new ISSUE_TEMPLATE looks like its in `.github/ISSUE_TEMPLATE.md`. Furthermore, now the CONTRIBUTING.md shows up when you create a new issue.
