add drone shellcheck badge

diff --git a/README.md b/README.md
index 1cf1788..a6ec629 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # bollux - a bash Gemini client
 
+[![Shellcheck Status](https://drone.tildegit.org/api/badges/acdw/bollux/status.svg)](https://drone.tildegit.org/acdw/bollux)
+
 inspired by
 
 * [birch](https://github.com/dylanaraps/birch)