message: increase SDK provajs-lib version
  Reviewers: alexbosworth, benchan, alex
  Subscribers: ben
diff: {
  "name": "bitgo",
  - "version": "3.3.3",
  + "version": "3.3.4",
  "description": "BitGo Javascript SDK",
  "main": "./src/index.js",
  "keywords": [
  "minimist": "0.2.0",
  "moment": "~2.18.1",
  "morgan": "1.5.3",
  - "prova-lib": "0.1.0",
  + "prova-lib": "0.2.3",
  "q": "1.1.2",
  "ripple-lib": "~0.17.7",
  "sanitize-html": "1.13.0",
  