README: added some information about our prerequisites and our scripts.

qwe

Author: agarny

README.md

@@ -1,3 +1,43 @@
 # OpenCOR
 
 [OpenCOR](https://opencor.ws/) is a Web-based modelling environment, which can be used to organise, edit, simulate, and analyse [CellML](https://cellml.org/) files. It can be used both as a standalone application (on [Windows](https://en.wikipedia.org/wiki/Microsoft_Windows), [Linux](https://en.wikipedia.org/wiki/Linux), and [macOS](https://en.wikipedia.org/wiki/MacOS)) and on the Web.
+
+## Prerequisites
+
+To build OpenCOR, you need to install [node.js](https://nodejs.org/) and [npm](https://npmjs.com/), which you can do from [here](https://nodejs.org/en/download/package-manager). Then, you need to install [yarn](https://yarnpkg.com/), which you can do by running:
+
+```bash
+npm install -g yarn
+```
+
+## Scripts
+
+Before doing anything, you need to install all of OpenCOR's dependencies:
+
+```bash
+yarn
+```
+
+Then, you can run a given script:
+
+```bash
+yarn <script>
+```
+
+where `<script>` is one of the following:
+
+- `clean`: clean OpenCOR's environment;
+- `dev`: start OpenCOR and OpenCOR's Web app in development mode;
+- `dev:web`: start OpenCOR's Web app in development mode;
+- `format`: format OpenCOR's code and OpenCOR's Web app's code;
+- `format:check`: check that OpenCOR's code and OpenCOR's Web app's code are properly formatted;
+- `lint`: lint OpenCOR's code and OpenCOR's Web app's code;
+- `package`: (build and) package OpenCOR for the current platform;
+- `package:linux`: (build and) package OpenCOR for Linux;
+- `package:mac`: (build and) package OpenCOR for macOS;
+- `package:win`: (build and) package OpenCOR for Windows;
+- `publish:web`: publish OpenCOR's Web app on [npm](https://npmjs.com/);
+- `start`: start OpenCOR in production mode;
+- `start:web`: start OpenCOR's Web app in production mode;
+- `typecheck`: type check OpenCOR's code; and
+- `typecheck:web`: type check OpenCOR's Web app's code.