fix(package): update ejs to version 3.1.3

Closes #38

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
   ],
   "dependencies": {
     "donejs-generator-common": "^1.0.5",
-    "ejs": "^2.3.4",
+    "ejs": "^3.1.3",
     "q": "^1.4.1",
     "yeoman-generator": "^1.1.1"
   },