Drone (#9)

Add '.drone.yml'

Reviewed-on: https://git.etztech.xyz/Minecraft/PluginAPI/pulls/9
Reviewed-by: ZeroHD <joey@ahines.net>

.drone.yml

@@ -0,0 +1,39 @@
+---
+kind: pipeline
+name: compliance
+
+trigger:
+  event:
+  - pull_request
+
+steps:
+- name: build
+  pull: always
+  image: maven:3-alpine
+  commands:
+  - mvn install
+
+---
+kind: pipeline
+name: release
+
+trigger:
+  branch:
+  - master
+  event:
+  - push
+
+steps:
+- name: auth
+  pull: always
+  image: robertstettner/drone-mvn-auth
+  settings:
+    servers:
+      from_secret: maven_servers
+
+
+- name: deploy
+  pull: always
+  image: maven:3-alpine
+  commands:
+  - mvn deploy -gs settings.xml