Confusing usage of API_KEY in sample project

[alexfu]

The sample README mentions the following:

SHOP_DOMAIN=<your-shop-here>.myshopify.com
API_KEY=<your-api-key>
ANDROID_PAY_PUBLIC_KEY=<your-android-pay-public-key>
ANDROID_PAY_ENVIRONMENT=com.google.android.gms.wallet.WalletConstants.<ENVIRONMENT_TEST OR ENVIRONMENT_PRODUCTION>

API_KEY here should really be renamed to STOREFRONT_API_KEY or STOREFRONT_ACCESS_TOKEN as it can be easily confused with the Admin API key (the label for Admin API Key in Admin screen on Shopify is just "API Key" but Storefront API Key is labeled as "Storefront Access Token").

[GujaratiMonali]

API_KEY = STOREFRONT_ACCESS_TOKEN