add rsync (#9)

Author: huangyoukun

plugins/rsync/rsync/README.md

@@ -0,0 +1,28 @@
+# rsync
+
+ rsync 同步文件工具
+
+## 在 Docker 上使用
+
+```shell
+docker build --rm -t -v $(pwd):$(pwd) -w $(pwd) drillster/drone-rsync .
+```
+
+## 在 Coding-CI 上使用
+
+```yml
+master:
+  push:
+  - stages:
+    - name: rsync
+      image: drillster/drone-rsync
+      settings:
+        key: xxx
+        hosts:
+          - ip1
+          - ip2
+        target: .
+        prescript: echo 'pre script'
+        script: echo 'script'
+        args: args
+```

plugins/rsync/rsync/plugin-meta.json

@@ -0,0 +1,9 @@
+{
+  "name": "rsync",
+  "description": "rsync 文件同步工具",
+  "tags": ["rsync", "publish"],
+  "mark": "社区",
+  "images": "https://hub.docker.com/r/drillster/drone-rsync/tags",
+  "source": "https://github.com/drillster/drone-rsync",
+  "bugs": "https://github.com/Drillster/drone-rsync/issues"
+}