message: Add yarn start command for development
diff: "lint": "eslint --max-warnings 0 \"**/*.{js,ts}\"",
  "build": "tsc",
  "build-or-skip": "[ -n \"$SKIP_BUILD\" ] || yarn build",
  + "start": "yarn build-or-skip && ./bin/cosmwasm-cli",
  "selftest": "yarn build-or-skip && ./bin/cosmwasm-cli --selftest",
  "test-node": "node jasmine-testrunner.js",
  "test": "yarn build-or-skip && yarn test-node"
  