Examine source code of FACEIT Predictor

{
  "name": "FACEIT Predictor",
  "description": "Predicts the outcome and winning probabilities of your FACEIT matches",
  "version": "1.3.1",
  "manifest_version": 2,
  "minimum_chrome_version": "51",
  "permissions": [
    "storage",
    "https://api.faceit.com/",
    "https://faceit-predictor-api.herokuapp.com/"
  ],
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "https://www.faceit.com/*"
      ],
      "js": [
        "core.js"
      ]
    },
    {
      "run_at": "document_end",
      "matches": [
        "https://faceit-predictor-api.herokuapp.com/faceit/authCallback*"
      ],
      "js": [
        "faceitAuth.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon-128.png",
    "default_title": "FACEIT Predictor",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "*.png"
  ],
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoLFFY5xjKFAdH/WhZyw6F6wJLjQyzRAIz9dRuMcTi3yWAcjk+B/mp92mRwf1pF7IThAKZoSIxU25UvTbEjTJVNZp8upWlNfsh128NANtSeSVvC5dbpqaKnvw1AoztquUsRXvVNjp9UNTYaihFCDPXl++Q0aW3Qv1TStmC7YtJHthX8WwhCnElSs34eq1aAfrC+kQw+t1DihoMFxOM6UDOWQaQYnJx0bA1N+r32wepLAeUpdbtKcVyVaPNwHfsS1TmPwoHlwHXEFhiiNlXmj4hQy2nZ1qHb9YbFifdfpQgMHyByd60pboudS7RHNBWoavhn0uwRIRNLUrKpp5pCBWvwIDAQAB",
  "browser_specific_settings": {
    "gecko": {
      "id": "predictormoz@faceitpredictor.com",
      "strict_min_version": "57.0"
    }
  }
}