chore(package): update graphql-tools to version 3.0.3

Closes #27

Author: greenkeeper[bot]

package.json

@@ -56,7 +56,7 @@
     "eslint-plugin-prettier": "^2.4.0",
     "globby": "^7.1.1",
     "graphql": "^0.12.3",
-    "graphql-tools": "^2.14.1",
+    "graphql-tools": "^3.0.3",
     "husky": "^0.14.3",
     "inquirer": "^4.0.1",
     "jest": "^22.0.4",