{
  "name": "contentful",
  "description": "Client for Contentful's Content Delivery API",
  "version": "0.0.13",
  "homepage": "https://www.contentful.com/developers/documentation/content-delivery-api/",
  "main": "index.js",
  "browser": {
    "questor": "./questor.min.js"
  },
  "repository": "git@github.com:contentful/contentful.js.git",
  "author": "Stephan Seidt <stephan@contentful.com>",
  "license": "MIT",
  "dependencies": {
    "redefine": "~0.2.0",
    "questor": "1.0.0-alpha.2",
    "underscore-contrib": "~0.2.1"
  },
  "devDependencies": {
    "buster": "~0.7.6",
    "bluebird": "~1.0.0"
  },
  "scripts": {
    "test": "testem ci",
    "prepare-browser-test": "browserify -d -t envify -x buster test/helper.js > test/bundle-helper.js"
 }
}

{
  "name": "contentful",
  "description": "Client for Contentful's Content Delivery API",
  "version": "0.0.13",
  "homepage": "https://www.contentful.com/developers/documentation/content-delivery-api/",
  "main": "index.js",
  "browser": {
    "questor": "./questor.min.js"
  },
  "repository": "git@github.com:contentful/contentful.js.git",
  "author": "Stephan Seidt <stephan@contentful.com>",
  "license": "MIT",
  "dependencies": {
    "redefine": "~0.2.0",
    "questor": "1.0.0-alpha.2",
    "underscore-contrib": "~0.2.1"
  },
  "devDependencies": {
    "buster": "~0.7.6",
    "bluebird": "~1.0.0",
    "envify": "~1.0.1"
  },
  "scripts": {
    "test": "testem ci",
    "prepare-browser-test": "browserify -d -t envify -x buster test/helper.js > test/bundle-helper.js"
 }
}

Add envify to dev dependencies
Add envify to dev dependencies
