fix(package): update source-map-support to version 0.5.18

Closes #5

Author: greenkeeper[bot]

package.json

@@ -4,7 +4,7 @@
   "dependencies": {
     "common-tags": "^1.3.1",
     "express": "^4.14.0",
-    "source-map-support": "^0.4.5",
+    "source-map-support": "^0.5.18",
     "vue": "^2.0.3",
     "vue-router": "^2.0.1",
     "vue-server-renderer": "^2.0.3"