Add depencies and a command to generate contract wrappers

packages/0x.js/package.json

@@ -16,6 +16,7 @@
     "build": "run-p build:umd:prod build:commonjs; exit 0;",
     "docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --json $JSON_FILE_PATH $PROJECT_DIR",
     "upload_docs_json": "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
+    "generate_contract_wrappers": "typed-contracts --abiGlob 'src/artifacts/@(Exchange|Token|TokenTransferProxy|EtherToken|TokenRegistry).json' --templates ../typed-contracts-templates/ --output src/contract_wrappers/generated",
     "lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
     "test:circleci": "run-s test:coverage report_test_coverage && if [ $CIRCLE_BRANCH = \"development\" ]; then yarn test:umd; fi",
     "test": "run-s clean test:commonjs",
@@ -45,6 +46,8 @@
   },
   "devDependencies": {
     "@0xproject/tslint-config": "^0.2.0",
+    "@0xproject/typed-contracts": "^0.0.0",
+    "@0xproject/typed-contracts-templates": "^0.0.0",
     "@types/bintrees": "^1.0.2",
     "@types/jsonschema": "^1.1.1",
     "@types/lodash": "^4.14.64",