Adding venv. 'pyTelegramBotAPI' already included.

.gitignore

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+# IDE settings
+/.idea
+
+# Python
+/.venv

README.md

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-**Telegram RSS Bot**
+# Telegram RSS Bot
+## Setting up virtual environment
+
+To be able to isolate project environment we'll use
+[Python's venv](https://docs.python.org/3/library/venv.html).
+
+### Setting up new environment and installing dependencies
+
+```shell
+# Create VirtualEnv directory
+python -m venv ./.venv
+# Loading environment
+source .venv/bin/activate
+# Installing dependencies
+pip install -r requirements.txt
+```
+
+### Adding dependencies
+
+```shell
+# Installing new dependency
+pip install somedependency
+# Rewriting dependency file
+pip freeze > requirements.txt
+```
+
+**Do not forget** to install the latest dependencies before adding new dependencies and rewriting
+the `requirements.txt` file. Otherwise old dependencies could be lost.

requirements.txt

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+certifi==2021.10.8
+charset-normalizer==2.0.12
+idna==3.3
+pyTelegramBotAPI==4.5.0
+requests==2.27.1
+urllib3==1.26.9