Update portainer.json

Author: qiaofeng1227

portainer.json

@@ -3,7 +3,7 @@
     "Repository": "https://github.com/Websoft9/plugin-portainer",
     "Update URI": "https://example.com/my-plugin/",
     "Description": "200 application template for you installation.",
-    "Version": "0.1.4",
+    "Version": "0.1.4-rc1",
     "Requires at most": "1.8.20",
     "Requires at least": "0.7.3",
     "Author": "Websoft9 Inc",