add README

README.md

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+# Bonbast2TG
+
+Bonbast2TG is a project that fetches exchange rates from Bonbast and sends updates to a Telegram channel.
+
+## Features
+
+- Fetches exchange rates from Bonbast
+- Sends updates to a specified Telegram channel
+- Configurable update intervals
+
+## Installation
+
+1. Clone the repository:
+    ```sh
+    git clone https://github.com/yourusername/bonbast2tg.git
+    ```
+2. Navigate to the project directory:
+    ```sh
+    cd bonbast2tg
+    ```
+3. Install the required dependencies:
+    ```sh
+    pip install -r requirements.txt
+    ```
+
+## Configuration
+
+1. Create a `.env` file in the project directory with the following content:
+    ```env
+    TELEGRAM_BOT_TOKEN=your_telegram_bot_token
+    TELEGRAM_CHAT_ID=your_telegram_chat_id
+    ```
+
+## Usage
+
+Run the script to start fetching exchange rates and sending updates:
+```sh
+python main.py
+```