message: fix(lib): add missing information to library's package.json.
diff: {
  "name": "ng-chartist",
  "version": "3.0.0",
  + "description": "Chartist component for Angular",
  + "repository": {
  + "type": "git",
  + "url": "git+https://github.com/willsoto/ng-chartist.git"
  + },
  + "keywords": [
  + "angular",
  + "chartist",
  + "charting",
  + "charts"
  + ],
  + "author": "Will Soto",
  + "license": "Apache-2.0",
  + "bugs": {
  + "url": "https://github.com/willsoto/ng-chartist/issues"
  + },
  + "homepage": "https://github.com/willsoto/ng-chartist",
  "peerDependencies": {
  "@angular/common": ">=4.1.2",
  "@angular/core": ">=4.1.2",
  