added readme

README.md

+# Vkusvill Generator
+
+## First run
+
+This project requires node >=v14.4.0
+
+I recommend to use nvm (Node Version Manager) for installing and switching Node versions
+Follow the installation guide from the official repository https://github.com/nvm-sh/nvm#installing-and-updating
+
+If there is Node LTS version >=16 - use it instead of 14
+
+After nvm installation - close and reopen terminal and run:
+```shell script
+nvm install 14
+nvm use 14
+nvm alias default 14
+```
+
+Node would be installed and configured properly. Read the output, some OS requires adding variables (just follow instructions in output).
+
+### Package manager
+```shell script
+npm install -g yarn
+```
+
+### Dependencies
+Install all dependencies by running
+```shell script
+yarn
+```
+
+### Configuration
+Create .env file and fill it with your config
+```dotenv
+KUS_GENERATOR_BACKEND=https://api.vkusvill.flexlab.pro
+KUS_GENERATOR_PORT=7890
+```
+
+Where KUS_GENERATOR_BACKEND is the URI of backend
+
+### Finally
+
+That's it! Everything is ready for starting backend.
+
+For local start just run
+
+```shell script
+yarn api
+```
+
+After Generator API is started - you can see it's methods exposed on 
+http://localhost:7890/api (set the port same as in .env)
+
+For production run I usually use process-forever
+
+# TODO: write process-forever production manual