Add update_miniflux.sh

update/update_miniflux.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+export DATABASE_URL=""
+./miniflux -flush-sessions
+wget `curl -s https://api.github.com/repos/miniflux/v2/releases | grep 'browser_download_url.*miniflux-linux-amd64' | head -n 1 | cut -d '"' -f 4`
+mv miniflux-linux-amd64 miniflux
+chmod +x miniflux
+./miniflux -migrate