docs(readme): add contribution guideline

README.md

@@ -76,3 +76,22 @@ OUTPUT {event: <event>, message: <message>}
   - `DATA`: Fired every time some packet of data is SAVED.
   - `TRUNCATE`: Fired once the meta info is removed from the `.mtd` file.
   - `RENAME`:Fired once the file is renamed from `.mtd` to the original name.
+
+# Contribution Guidelines
+[standard]:     http://standardjs.com
+[commitizen]:   https://github.com/commitizen/cz-cli
+Before submitting a patch make sure —
+
+0. Use `npm update` to load the latest dependencies
+
+0. All tests are passing. If its a bug add a new test to mimic the bug.
+
+0. Follows [Standard][standard] code style.
+
+0. Commits are in `<type>(<scope>): <subject>` format. Where type can be — `feat` `fix` `docs` `style` `refactor` `perf` `test` `chore` `revert`.
+
+   Best practice would be to use [commitizen][commitizen] to make sure the commit is in standard format.
+   ```
+   npm install commitizen -g
+   git cz -a
+   ```