Update package.json with version compatibility changes
diff --git a/package.json b/package.json
index 5506e9b..6fd799c 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "poisson-process": "^0.2.1"
   },
   "engines": {
-    "node": ">=0.12.0"
+    "node": ">=1.1.0"
   },
   "binary": {
     "module_name": "grpc_node",