Update README.md

Author: FeodorFitsner

README.md

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-# pglet-bash
- Bash bindings for Pglet - easily build interactive web apps in Bash
+# Pglet client for Bash
+
+[Pglet](https://pglet.io) (*"piglet"*) is a rich user interface (UI) framework for scripts written in PowerShell or any other language. 
+Pglet renders web UI, so you can easily [build web apps](https://pglet.io/docs/quickstart) with Bash.
+Knowledge of HTML/CSS/JavaScript is not required as you build UI with [controls](https://pglet.io/docs/reference/controls). Pglet controls are built with [Fluent UI React](https://developer.microsoft.com/en-us/fluentui#/controls/web) to ensure your programs look cool and professional.
+
+## Requirements
+
+* Bash, Zsh on Linux or macOS. Windows is not supported.
+
+## Installation
+
+Download `pglet.sh` helper script from our website:
+
+    curl -O https://pglet.io/pglet.sh
+
+## Hello, world!
+
+Create `hello.sh` with the following content:
+
+```bash
+. pglet.sh
+
+pglet_page
+pglet_send "add text value='Hello, world!'"
+```
+
+Run `sh hello.psh` and in a new browser window you'll get:
+
+![Sample app in a browser](https://pglet.io/img/docs/quickstart-hello-world.png "Sample app in a browser")
+
+Here is a local page served by an instance of Pglet server started in the background on your computer.
+
+## Make it web
+
+Add `PGLET_WEB=true` before `pglet_page` call:
+
+```posh
+. pglet.sh
+
+PGLET_WEB=true pglet_page
+pglet_send "add text value='Hello, world!'"
+```
+
+This time page will be created on [Pglet hosted service](https://pglet.io/docs/pglet-service).
+
+Read [Bash tutorial](https://pglet.io/docs/tutorials/bash) for further information and more examples.