Fixes and clean up (#51)

* Simplify main

* Fix init

* Cleaner output for the end user

* Fix extractVideoGuid after sync with dev

* TokenCache: Make variable private

nit: switch to import

* Add option to disable video thumbnails

* Create a unique file name to avoid overwrite

* Remove os dependency

* Reimplement simulate

* Update README

Co-authored-by: @kylon
Co-authored-by: @snobu

package-lock.json

@@ -133,6 +133,11 @@
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       "dev": true
     },
+    "@types/jwt-decode": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/@types/jwt-decode/-/jwt-decode-2.2.1.tgz",
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+    },
     "@types/mime-types": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/@types/mime-types/-/mime-types-2.1.0.tgz",