Merge pull request #120 from zilliztech/dev-branch

update package.json

server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "attu",
-  "version": "2.1.5",
+  "version": "2.1.5-dev",
   "license": "MIT",
   "author": {
     "name": "zilliz",