Add babel plugin transform-object-rest-spread for redux

[omgoshjosh]

http://redux.js.org/docs/recipes/UsingObjectSpreadOperator.html

Since the object spread syntax is still a Stage 2 proposal for ECMAScript you'll need to use a transpiler such as Babel to use it in production. You can use your existing es2015 preset, install babel-plugin-transform-object-rest-spread and add it individually to the plugins array in your .babelrc.

{
  "presets": ["es2015"],
  "plugins": ["transform-object-rest-spread"]
}