message: Replace deprecated 'prepublish' npm script to 'prepare'. Fixes
diff: "browserify-tests": "./node_modules/.bin/browserify lib/index.js --standalone blockstack -o ./tests/browserTests/bundle.js",
  "compile": "rm -rf lib; babel src -d lib",
  "compile-tests": "rm -rf tests/unitTests/lib; rm -rf tests/authTests/lib; babel tests/unitTests/src -d tests/unitTests/lib; babel tests/authTests/src -d tests/authTests/lib;",
  - "prepublish": "npm run build",
  + "prepare": "npm run compile",
  + "prepublishOnly": "npm run build",
  "dev-auth": "npm run compile; npm run browserify; node ./tests/browserTests/auth-server.js",
  "dev-proofs": "npm run compile; npm run browserify; node ./tests/browserTests/proofs-server.js",
  "unit-test": "npm run lint && npm run flow && npm run compile && npm run compile-tests && npm run browserify && node ./tests/unitTests/lib/index.js",
  