docs(contribution guide): add requirements about commit and PR naming (#133)

docs(contribution guide): add requirements about commit and PR naming

Signed-off-by: grzesuav <grzesuav@gmail.com>

Author: grzesuav

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,15 @@
+## Pull Request template
+Please, go through these steps before you submit a PR.
+
+1. This repository follows semantic versioning convention, therefore each PR title/commit message must follow convention: `<type>(<scope>): [#issue_number] - <subject>`. 
+   `type` is defining if release will be triggering after merging submitted changes, details in [CONTRIBUTING.md](../CONTRIBUTING.md). `#issue_number` is optional, when commit resolves any github issue.
+    Most common types are:
+    * `feat` - for new features
+    * `fix` - for bug fixes or improvements
+    * `chore` - changes not related to code
+
+
+
+IMPORTANT: Please review the [CONTRIBUTING.md](../CONTRIBUTING.md) file for detailed contributing guidelines.
+
+**PLEASE REMOVE THIS TEMPLATE BEFORE SUBMITTING**

CONTRIBUTING.md

@@ -13,6 +13,17 @@ You generally only need to submit a CLA once, so if you've already submitted one
 All submissions, including submissions by project members, require review. We use GitHub pull requests for this purpose. Consult
 [GitHub Help](https://help.github.com/articles/about-pull-requests/) for more information on using pull requests.
 
+## Commit messages
+
+This repository uses [semantic versioning](https://semver.org/), therefore every commit and PR must follow naming convention. We require commit header to be in form `<type>(<scope>): [#issue_number] - <subject>`, where `type`, `scope` and
+`subject` as defined in  [angular commit message convention](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#type). `#issue_number` is optional, if commit resolves any gihub issue.
+
+Please be aware that new release will be triggered for:
+* `feat` - minor release
+* `perf/fix` - patch release
+
+where minor/patch as in semantic versioning definition.
+
 ## Contributor Guide
 
 Aside from the above administrative requirements, you can find more