Bump to 1.1.1 and ensure we build before publishing

Author: djhi

package.json

@@ -1,6 +1,6 @@
 {
     "name": "json-graphql-server",
-    "version": "1.1.0",
+    "version": "1.1.1",
     "main": "lib/json-graphql-server.node.min.js",
     "browser": "lib/json-graphql-server.client.min.js",
     "repository": "[email protected]:marmelab/json-graphql-server.git",
@@ -19,7 +19,8 @@
         "precommit": "lint-staged",
         "test": "jest",
         "watch-test": "make watch-test",
-        "server": "make run"
+        "server": "make run",
+        "prepublish": "make build"
     },
     "lint-staged": {
         "src/**/*.js": [