Transition of terminology for ENV

RE: comments on [Issue Rob--W#320][1]

Make a path to move to more progressive terminology.

[1]: https://github.com/Rob--W/cors-anywhere/issues/320#issuecomment-801445034

lib/cors-anywhere.js

@@ -269,13 +269,25 @@ function getHandler(options, proxy) {
     corsMaxAge: 0,                  // If set, an Access-Control-Max-Age header with this value (in seconds) will be added.
     helpFile: __dirname + '/help.txt',
   };
-
   Object.keys(corsAnywhere).forEach(function(option) {
     if (Object.prototype.hasOwnProperty.call(options, option)) {
       corsAnywhere[option] = options[option];
     }
   });
 
+  if (Object.prototype.hasOwnProperty.call(options, 'originWhitelist')) {
+    if (options.originWhitelist.length && !corsAnywhere.originAllowList.length) {
+      console.warn("Deprecated Property used 'originWhitelist'");
+      corsAnywhere.originAllowList = options.originWhitelist;
+    }
+  }
+  if (Object.prototype.hasOwnProperty.call(options, 'originBlacklist')) {
+    if (options.originBlacklist.length && !corsAnywhere.originBlockList.length) {
+      console.warn("Deprecated Property used 'originBlacklist'");
+      corsAnywhere.originBlockList = options.originBlacklist;
+    }
+  }
+
   // Convert corsAnywhere.requireHeader to an array of lowercase header names, or null.
   if (corsAnywhere.requireHeader) {
     if (typeof corsAnywhere.requireHeader === 'string') {

server.js

@@ -9,6 +9,8 @@ var port = process.env.PORT || 8080;
 // use originAllowList instead.
 var originBlockList = parseEnvList(process.env.CORSANYWHERE_BLOCKLIST);
 var originAllowList = parseEnvList(process.env.CORSANYWHERE_ALLOWLIST);
+var originBlackList = parseEnvList(process.env.CORSANYWHERE_BLACKLIST);
+var originWhiteList = parseEnvList(process.env.CORSANYWHERE_WHITELIST);
 function parseEnvList(env) {
   if (!env) {
     return [];
@@ -23,6 +25,8 @@ var cors_proxy = require('./lib/cors-anywhere');
 cors_proxy.createServer({
   originBlockList: originBlockList,
   originAllowList: originAllowList,
+  originBlackList: originBlackList,
+  originWhiteList: originWhiteList,
   requireHeader: ['origin', 'x-requested-with'],
   checkRateLimit: checkRateLimit,
   removeHeaders: [