readme update

README.md

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 # dual-linting
 This is POC shows that it's possible to have only one code style on server-side and each developer could have their own code style simultaneously.
+
+## How?
+There are two eslint configuration files: (1) one on the root of the project - the server code style, (2) another one on ./src - each devs code style.
+
+(1) By using Git Hooks (Husky and Lint-staged), before committing the code will always be linted using this eslint configuration.
+(2) is on .gitignore, so that no dev overrides the others configurations.