Fix npm prepublish warning

Author: dupski

package.json

@@ -7,7 +7,7 @@
         "build": "tslint -p . && rm -rf lib/ && tsc",
         "test": "mocha -r ts-node/register --recursive \"./src/**/__tests__/*\"",
         "test-watch": "mocha -r ts-node/register --recursive \"./src/**/__tests__/*\" --watch --watch-extensions ts,tsx",
-        "prepublish": "npm run build && npm run test"
+        "prepare": "npm run build && npm run test"
     },
     "typings": "lib/index.d.ts",
     "repository": {
@@ -24,4 +24,4 @@
         "tslint": "5.8.0",
         "typescript": "2.6.2"
     }
-}
+}