Feature/improve conferences images (#48)

* update image proportions and look and feel

* remove non used library

* removing calendar from repository

* update Readme on DEMO

Author: ggerman

demo/rsn_events_bot/README.md

@@ -1,15 +1,92 @@
-# RubyStackNews Events Image Generator
+# RubyStackNews Events Bot
 
-This demo shows how ruby-libgd can be used to generate dynamic images.
+RubyStackNews Events Bot generates a visual list of upcoming Ruby conferences and meetups.
+It reads events from a YAML file and produces a clean image that can be shared on social networks or newsletters.
 
-The script renders a social-media image listing upcoming Ruby community events with a countdown.
+The goal is to make Ruby community events easy to discover and promote.
 
-Typical use case:
+## Features
 
-- automated GitHub Actions
-- scheduled image generation
-- social media bots
+* Reads events from a simple YAML file
+* Filters only upcoming events for the current year
+* Displays a countdown until each event
+* Uses visual indicators to highlight upcoming events
+* Generates shareable images automatically
+* Lightweight and script-friendly
 
-Run:
+## Countdown Indicators
 
-ruby bot.rb
+Events are visually categorized depending on how soon they will occur.
+
+| Icon | Meaning                               |
+| ---- | ------------------------------------- |
+| 🔥   | Event happening soon                  |
+| ⏳    | Event approaching                     |
+| 📅   | Event scheduled further in the future |
+
+This makes the event list easy to scan quickly.
+
+## Example Output
+
+The bot produces an image similar to:
+
+```
+RubyStackNews — Upcoming Ruby Events
+
+🔥 Ruby Community Conference Winter Edition → Kraków, Poland • 4 days
+⏳ Rubysur → Buenos Aires, Argentina • 9 days
+📅 RubyKaigi → Hakodate, Japan • 44 days
+```
+
+## Event Data Format
+
+Events are defined in a YAML file.
+
+Example:
+
+```yaml
+events:
+  - name: Ruby Community Conference Winter Edition
+    location: Kraków, Poland
+    date: 2026-03-13
+
+  - name: Rubysur
+    location: Buenos Aires, Argentina
+    date: 2026-03-18
+
+  - name: RubyKaigi
+    location: Hakodate, Japan
+    date: 2026-05-20
+```
+
+## How It Works
+
+1. Load events from the YAML file.
+2. Parse event dates.
+3. Filter events occurring in the current year.
+4. Calculate remaining days.
+5. Assign an icon depending on how soon the event occurs.
+6. Render the list into an image.
+
+## Running the Script
+
+```
+ruby generate_events_image.rb
+```
+
+The script will create an image with the current upcoming events.
+
+## Contributing
+
+If you know about a Ruby event that should appear here, feel free to contribute.
+
+You can:
+
+* open a pull request adding it to the YAML file
+* or send the event information to:
+
+**[ggerman@gmail.com](mailto:ggerman@gmail.com)**
+
+## License
+
+MIT