message: update typescript version to avoid error
diff: "devDependencies": {
  "rimraf": "^2.6.2",
  "tslint": "^5.11.0",
  - "typescript": "^3.0.3"
  + "typescript": "^3.2.2"
  },
  "dependencies": {
  "@prague/client-api": "^0.1.0",
  