add drone.io

.drone.yml

@@ -0,0 +1,17 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: merlin
+  image: golang:1.17
+  commands:
+    # add linter
+    - cd merlin
+    - go build
+    - go test
+
+trigger:
+  event:
+    - push

.gitignore

@@ -1,4 +1,3 @@
-/.*
 !.gitignore
 .git_old/
 /dead.letter