point to latest 2017 version of google-closure-compiler (issue #8)

Author: Camel Aissani

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rollup-plugin-closure-compiler-js",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Rollup plugin to invoke google-closure-compiler-js.",
   "main": "dist/rollup-plugin-closure-compiler-js.js",
   "jsnext:main": "dist/rollup-plugin-closure-compiler-js.es.js",
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/camelaissani/rollup-plugin-closure-compiler-js#readme",
   "dependencies": {
-    "google-closure-compiler-js": "*"
+    "google-closure-compiler-js": ">20170000"
   },
   "devDependencies": {
     "babel-core": "^6.14.0",