Add installation instruction file;

Order directories.

rivista/gmi/markdown.py

@@ -0,0 +1,52 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+class GmiMarkdown:
+
+    def convert_to_gmi(markdown_text):
+        lines = markdown_text.splitlines()
+        footnotes = []
+        footnote_counter = 1
+        output_lines = []
+
+        for line in lines:
+            # Process links in the format [text](url)
+            while True:
+                start_bracket = line.find('[')
+                if start_bracket == -1:
+                    break  # No more links in this line
+
+                end_bracket = line.find(']', start_bracket)
+                if end_bracket == -1:
+                    break  # Malformed link; exit loop
+
+                start_parenthesis = line.find('(', end_bracket)
+                if start_parenthesis == -1:
+                    break  # Malformed link; exit loop
+
+                end_parenthesis = line.find(')', start_parenthesis)
+                if end_parenthesis == -1:
+                    break  # Malformed link; exit loop
+
+                link_text = line[start_bracket + 1:end_bracket]
+                url = line[start_parenthesis + 1:end_parenthesis]
+
+                # Add footnote
+                footnotes.append(f" [{footnote_counter}]: {link_text}{url}")
+                footnote_marker = f"{link_text}[{footnote_counter}]"
+                footnote_counter += 1
+
+                # Replace link with footnote marker
+                line = line[:start_bracket] + footnote_marker + line[end_parenthesis + 1:]
+
+            # Remove Markdown header markers
+            if line.startswith('#'):
+                line = line.lstrip('# ').strip()
+
+            output_lines.append(line.strip())
+
+        # Combine output lines and footnotes
+        output_text = "\n".join(output_lines).strip()
+        footnotes_text = "\n".join(footnotes)
+
+        return f"{output_text}\n\n{footnotes_text}" if footnotes else output_text