Missing autoprefixer dependency

[a-c-m]

Currently master will not npm run due to a missing autoprefixer dependency.

> webpack-dev-server --hot "--context" "examples/dev/" "--config" "examples/dev/webpack.dev.babel.js"

module.js:339
    throw err;
    ^

Error: Cannot find module 'autoprefixer'
    at Function.Module._resolveFilename (module.js:337:15)
    at Function.Module._load (module.js:287:25)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at Object.<anonymous> (webpack.dev.babel.js:5:1)
    at Module._compile (module.js:435:26)
    at loader (/Users/alex/dev/carte-blanche/node_modules/babel-core/node_modules/babel-register/lib/node.js:158:5)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/alex/dev/carte-blanche/node_modules/babel-core/node_modules/babel-register/lib/node.js:168:7)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at module.exports (/Users/alex/dev/carte-blanche/node_modules/webpack/bin/convert-argv.js:80:13)
    at Object.<anonymous> (/Users/alex/dev/carte-blanche/node_modules/webpack-dev-server/bin/webpack-dev-server.js:55:48)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)