moves history from dependencies to devDependencies

Author: Ben Cooling

package.json

@@ -48,6 +48,7 @@
     "gulp-concat-css": "^2.2.0",
     "gulp-cssmin": "^0.1.7",
     "gulp-shell": "^0.5.2",
+    "history": "^1.17.0",
     "jquery": "^2.1.4",
     "jsx-loader": "^0.13.2",
     "react": "^0.14.3 || ^15.0.0",
@@ -64,7 +65,6 @@
   },
   "dependencies": {
     "classnames": "^2.1.2",
-    "history": "^1.17.0",
     "react-toastr": "^2.8.0"
   },
   "peerDependencies": {