OS support and templates for PR/Issues (#63)

* OS support

* Create ISSUE_TEMPLATE.md

* Create PULL_REQUEST_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

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+<!-- Thanks for filing an issue! Before hitting the button, please answer these questions. 
+It's helpful to search the existing GitHub issues first. It's likely that another user 
+has already reported the issue you're facing, or it's a known issue that we're already aware of-->
+
+**Is this a request for help?**:
+
+---
+
+**Is this a BUG REPORT or FEATURE REQUEST?** (choose one):
+
+<!--
+If this is a BUG REPORT, please:
+  - Fill in as much of the template below as you can.  If you leave out
+    information, we can't help you as well.
+
+If this is a FEATURE REQUEST, please:
+  - Describe *in detail* the feature/behavior/change you'd like to see.
+
+In both cases, be ready for followup questions, and please respond in a timely
+manner.  If we can't reproduce a bug or think a feature already exists, we
+might close your issue.  If we're wrong, PLEASE feel free to reopen it and
+explain why.
+-->
+
+
+**Which installer**:
+
+
+**Which product and version**:
+
+
+**What happened**:
+
+
+**What you expected to happen**:
+
+
+**How to reproduce it** (as minimally and precisely as possible):
+
+
+**Anything else we need to know**:

.github/PULL_REQUEST_TEMPLATE.md

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+#### PR Checklist
+[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]
+- [ ] Title of the PR starts with installer/product name (e.g. `[ansible/artifactory]`)
+- [ ] CHANGELOG.md updated
+- [ ] Variables and other changes are documented in the README.md
+
+<!--
+Thank you for contributing . 
+
+Following our best practices right from the start will accelerate the review process and
+help get your PR merged quicker.
+
+When updates to your PR are requested, please add new commits and do not squash the
+history. This will make it easier to identify new changes. The PR will be squashed
+anyways when it is merged. Thanks.
+
+For fast feedback, please @-mention maintainers that are listed in the Chart.yaml file.
+
+Please make sure you test your changes before you push them. 
+Please check the results. We would like these checks to pass before we
+even continue reviewing your changes.
+-->
+
+**What this PR does / why we need it**:
+
+
+**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
+
+
+**Special notes for your reviewer**:
+