{
  "name": "swot",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node app.js",
    "test": "mocha",
    "prepublish": "node prepublish.js"
  },
  "dependencies": {
    "express": "3.4.5",
    "jade": "*",
    "mongoose": "~3.8.3",
    "bcrypt-nodejs": "0.0.3",
    "passport": "~0.1.17",
    "passport-local": "~0.1.6",
    "connect-flash": "~0.1.1",
    "underscore": "~1.5.2",
    "async": "~0.2.9",
    "moment": "~2.5.0",
    "bower": "~1.2.8",
    "connect-mongo": "~0.4.0"
  },
  "devDependencies": {
    "chai": "~1.8.1",
    "mocha": "~1.16.1",
    "sinon": "~1.7.3",
    "sinon-chai": "~2.4.0",
    "fs-extra": "~0.8.1",
    "execSync": "~1.0.1-pre"
  },
  "engines": {
    "node": "0.10.x"
  }
}

{
  "name": "swot",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node app.js",
    "test": "mocha",
    "prepublish": "node prepublish.js"
  },
  "dependencies": {
    "express": "3.4.5",
    "jade": "*",
    "mongoose": "~3.8.3",
    "bcrypt-nodejs": "0.0.3",
    "passport": "~0.1.17",
    "passport-local": "~0.1.6",
    "connect-flash": "~0.1.1",
    "underscore": "~1.5.2",
    "async": "~0.2.9",
    "moment": "~2.5.0",
    "bower": "~1.2.8",
    "connect-mongo": "~0.4.0",
    "fs-extra": "~0.8.1",
    "execSync": "~1.0.1-pre"
  },
  "devDependencies": {
    "chai": "~1.8.1",
    "mocha": "~1.16.1",
    "sinon": "~1.7.3",
    "sinon-chai": "~2.4.0"
  },
  "engines": {
    "node": "0.10.x"
  }
}

Move dependencies required for prepublish script from "devDependencies" to the main "dependencies" list.
Move dependencies required for prepublish script from "devDependencies" to the main "dependencies" list.

heroku buildpack for Node.js does not install devDependencies
