Modify language list in place and add count

Signed-off-by: Richie Bendall <richiebendall@gmail.com>

update_list.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import os
+import posixpath
+from urllib.parse import quote
+import re
+
+
+def regexReplace(string, search, replacement):
+    return re.compile(search).sub(replacement, string)
+
+
+languageCount = 0
+languagesText = ""
+
+# List the available languages
+for directory in sorted(os.listdir('.')):
+    if not (directory == '.' or directory == '..' or directory[0] == '.' or os.path.isfile(directory)):
+        for filename in sorted(os.listdir(directory), key=lambda s: s.lower()):
+            if os.path.isfile(os.path.join(directory, filename)):
+                language = os.path.splitext(filename)[0].replace(
+                    '-', ' ').replace('_', ' ').title()
+                languagesText += f'* [{language}]({posixpath.join(quote(directory), quote(filename))})\n'
+                languageCount += 1
+
+result = f"""<!--Languages start-->
+## Languages ({languageCount} total)
+
+{languagesText}<!--Languages end-->"""
+
+readmeContents = open('README.md', 'r', encoding="utf-8").read()
+
+open('README.md', 'w', encoding="utf-8").write(regexReplace(
+    readmeContents, r"<!--Languages start-->(.|\n)*<!--Languages end-->", result))