Add github templates (#52)

Signed-off-by: rimas <rmocius@gmail.com>

.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.
+-->
+
+**Version of Helm and Kubernetes**:
+
+<!-- To get current helm, kubernetes and ct versions:
+helm version
+kubectl version
+ct version
+and paste output here.
+-->
+
+**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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+<!--
+Thank you for contributing to helm/chart-testing.
+
+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.
+
+Please make sure you test your changes before you push them. Once pushed, a CircleCI
+will run across your changes and do some initial checks and linting. These checks run
+very quickly. 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**: