chore(package): move path-exists to devDep

Author: Scrum

package.json

@@ -38,12 +38,12 @@
   ],
   "dependencies": {
     "globby": "^6.1.0",
-    "path-exists": "^3.0.0",
     "post-load-plugins": "0.0.8",
     "posthtml": "^0.9.2",
     "yargs": "^6.6.0"
   },
   "devDependencies": {
+    "path-exists": "^3.0.0",
     "ava": "*",
     "ava-codemods": "^0.3.0",
     "babel-eslint": "^7.1.1",