add drone deploy

.drone.yml

@@ -0,0 +1,26 @@
+---
+kind: pipeline
+type: ssh
+name: deploy
+
+server:
+    host:
+        from_secret: host
+    user:
+        from_secret: username
+    ssh_key:
+        from_secret: ssh_key
+
+clone:
+    disable: true
+
+trigger:
+    branch:
+        - master
+
+steps:
+    - name: deploy
+      commands:
+          - cd /var/www/tildeverse.org
+          - sudo -Hu www-data git pull origin master
+

README.md

@@ -1,3 +1,5 @@
 # [tildeverse.org](https://tildeverse.org)
 
+[![Build Status](https://drone.tildegit.org/api/badges/tildeverse/site/status.svg)](https://drone.tildegit.org/tildeverse/site)
+
 the main website for the tildeverse