fix(package): update axios to version 0.18.0

Closes #13

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
   "author": "Josh Perez <[email protected]>",
   "license": "MIT",
   "dependencies": {
-    "axios": "^0.15.3",
+    "axios": "^0.18.0",
     "object.values": "^1.0.4"
   },
   "devDependencies": {