docs(github): move markdown files into .github folder

.github/CONTRIBUTING.md

@@ -0,0 +1,22 @@
+Follow the setup guide in README.md
+
+### Rebuild frontend assets on source change
+```
+grunt && grunt watch
+```
+
+### Rerun tests on source change
+```
+grunt karma:dev
+```
+
+### Run tests for backend assets before commit
+```
+test -z "$(gofmt -s -l . | grep -v Godeps/_workspace/src/ | tee /dev/stderr)"
+```
+
+### Run tests for frontend assets before commit
+```
+grunt test
+godep go test -v ./pkg/...
+```

.github/ISSUE_TEMPLATE.md

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+Thank you! For helping us make Grafana even better.
+
+To help us respond to your issues faster, please make sure to add as much information as possible.
+
+If this issue is about a plugin, please open the issue in that repository.
+
+Tag your issues title with [Feature Request] / [Bug] / [Question] or no tag if your unsure.
+
+Ex
+* What grafana version are you using?
+* What datasource are you using?
+* What OS are you running grafana on?