Move babel-plugin-transform-runtime to devDependencies (#62)

Author: gnestor

package.json

@@ -39,6 +39,7 @@
     "babel-plugin-transform-decorators-legacy": "^1.3.4",
     "babel-plugin-transform-es3-member-expression-literals": "^6.5.0",
     "babel-plugin-transform-es3-property-literals": "^6.5.0",
+    "babel-plugin-transform-runtime": "^6.7.5",
     "babel-preset-es2015": "^6.6.0",
     "babel-preset-es2015-loose": "^7.0.0",
     "babel-preset-react": "^6.5.0",
@@ -61,7 +62,6 @@
     "react": "^0.14.0 || ^15.0.0-0"
   },
   "dependencies": {
-    "babel-plugin-transform-runtime": "^6.7.5",
     "babel-runtime": "^6.6.1",
     "react-base16-styling": "^0.4.1",
     "react-pure-render": "^1.0.2"