chore: v2.0.0-beta

- update to `@coreui/react: ^2.0.0-beta`
- version bump

Author: xidedix

package.json

@@ -1,6 +1,6 @@
 {
   "name": "CoreUI-React",
-  "version": "2.0.0-alpha.3",
+  "version": "2.0.0-beta",
   "description": "CoreUI React Open Source Bootstrap 4 Admin Template",
   "author": "Łukasz Holeczek",
   "homepage": "http://coreui.io",
@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "@coreui/coreui": "^2.0.0-beta.6",
-    "@coreui/react": "^2.0.0-alpha.5",
+    "@coreui/react": "^2.0.0-beta",
     "babel-jest": "^22.4.3",
     "bootstrap": "4.0.0",
     "chart.js": "^2.7.2",