Description of the repository

Signed-off-by: Valentin Popov <info@valentineus.link>

README.md

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+# Personal site
+
+This is my main site.
+The site publishes articles, useful information and notes.
+Also, the site serves as a hosting of free and personal images.
+
+## Development
+
+To start a local server for development, you need:
+
+1. Clone the source repository:
+
+```bash
+git clone "https://github.com/valentineus/valentineus.github.io.git"
+```
+
+2. Install packages:
+
+```bash
+cd valentineus.github.io && bundle update
+```
+
+3. Start the server:
+
+```bash
+bundle exec jekyll serve --host "${IP}" --port "${PORT}" --trace
+```
+
+Please note in the executable command uses environment variables `IP` and `PORT`.
+
+## License hosted material
+
+<img width="256px" alt="CC BY-NC 3.0 License" src="https://raw.githubusercontent.com/valentineus/valentineus.github.io/master/assets/images/87624cb5-4a8f-4be4-90b6-0ec5b9a90333.png" />
+
+Material on the site is published on the CC BY-NC 3.0 license.
+
+## Source Code License
+
+<img width="256px" alt="MIT License" src="https://raw.githubusercontent.com/valentineus/valentineus.github.io/master/assets/images/7d05cad0-d553-42c7-be1f-7007926ba720.png" />
+
+[MIT](LICENSE.txt).
+Copyright (c)
+[Valentin Popov](https://valentineus.link/).