move lint-staged to devDependencies. Fixes #573

Author: sidorares

package.json

@@ -49,7 +49,6 @@
     "denque": "^1.1.1",
     "generate-function": "^2.0.0",
     "iconv-lite": "^0.4.17",
-    "lint-staged": "^3.4.2",
     "long": "^3.2.0",
     "lru-cache": "^4.0.1",
     "named-placeholders": "1.1.1",
@@ -68,6 +67,7 @@
     "eslint-plugin-prettier": "^2.1.1",
     "husky": "^0.13.3",
     "portfinder": "^1.0.10",
+    "lint-staged": "^3.4.2",
     "prettier": "^1.3.1",
     "prettier-markdown": "^0.1.6",
     "progress": "2.0.0",