Create coverage badge

update_coverage.py

@@ -0,0 +1,25 @@
+import subprocess
+import os
+import sys
+
+readme_file = "README.md"
+print("Updating coverage...")
+# Generate badge line
+output = subprocess.check_output(
+    "lcov --summary " + sys.argv[1] + "/coverage.info|cut -d' ' -f4 |head -2|"
+    "tail -1",
+    shell=True,
+)
+percentage = output.decode("utf-8").strip().replace(".", ",")
+coverage_line = (
+    f"![Static Badge](https://img.shields.io/badge/Coverage-{percentage}25-green)"
+)
+# Update README.md
+with open(readme_file, "r") as f:
+    lines = f.readlines()
+with open(readme_file, "w") as f:
+    for line in lines:
+        if "Coverage" in line:
+            f.write(coverage_line + "\n")
+        else:
+            f.write(line)