Move gulp-rimraf to devDependencies (#1214)

Author: gustavohenke

package.json

@@ -42,7 +42,6 @@
     "classnames": "^2.2.5",
     "core-js": "^2.4.0",
     "eslint-plugin-babel": "^4.0.1",
-    "gulp-rimraf": "^0.2.1",
     "ramda": "^0.23.0",
     "react-addons-css-transition-group": "^15.4.2",
     "react-css-themr": "^1.7.2",
@@ -77,6 +76,7 @@
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
     "gulp-postcss": "^6.3.0",
+    "gulp-rimraf": "^0.2.1",
     "identity-obj-proxy": "^3.0.0",
     "internal-ip": "^1.2.0",
     "jest": "^18.1.0",