Update source-map dependency to version 0.6.0

Author: benjamn

package.json

@@ -10,7 +10,7 @@
     "test": "mocha"
   },
   "dependencies": {
-    "source-map": "^0.5.6"
+    "source-map": "^0.6.0"
   },
   "devDependencies": {
     "browserify": "3.44.2",