Add an ISSUE_TEMPLATE.md

[klauskpm]

Description

This project needs an ISSUE TEMPLATE to help in the creation of new issues.

Create an ISSUE_TEMPLATE.md with the following:

<!--- Provide a general summary of the issue in the Title above -->

## Expected Behavior
<!--- If you're describing a bug, tell us what should happen -->
<!--- If you're suggesting a change/improvement, tell us how it should work -->

## Current Behavior
<!--- If describing a bug, tell us what happens instead of the expected behavior -->
<!--- If suggesting a change/improvement, explain the difference from current behavior -->

## Possible Solution
<!--- Not obligatory, but suggest a fix/reason for the bug, -->
<!--- or ideas how to implement the addition or change -->

## Steps to Reproduce (for bugs)
<!--- Provide a link to a live example, or an unambiguous set of steps to -->
<!--- reproduce this bug. Include code to reproduce, if relevant -->
1.
2.
3.
4.

## Context
<!--- How has this issue affected you? What are you trying to accomplish? -->
<!--- Providing context helps us come up with a solution that is most useful in the real world -->

## Your Environment
<!--- Include as many relevant details about the environment you experienced the bug in -->
* Version used:
* Environment name and version (e.g. PHP 5.4 on nginx 1.9.1):
* Server type and version:
* Operating System and version:
* Link to your project:

🥇 Call dibs

Say you will do this issue. I don't need to give you permission, but, if someone called dibs first and you send your PR after that, I will tag your PR as invalid.

Respect the dibs 👊

[DennyScott]

I can pick up this one too! :)

[klauskpm]

Thank you @DennyScott for your contribution! Have a happy Hacktoberfest!