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

* OS support

* Create ISSUE_TEMPLATE.md

* Create PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,31 @@
+#### 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**:
+