feat: Implement SharePoint People Picker for selecting starting person and update version to 1.0.3

package.json

@@ -1,6 +1,6 @@
 {
   "name": "organization-chart-webpart",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "private": true,
   "main": "lib/index.js",
   "engines": { "node": ">=6.9.0 <9.0.0" },
@@ -19,6 +19,7 @@
     "@types/react": "15.6.6",
     "@types/react-dom": "15.5.6",
     "@types/webpack-env": "1.13.1",
+    "office-ui-fabric-react": "5.21.0",
     "react": "15.6.2",
     "react-dom": "15.6.2"
   },