Remove config.json

Remove config.json (not secure) and replace with .env.

Update deploy-commands.js:
- const { token, clientId } = require('./config.json');
+ const { token, clientId } = process.env;

Update index.js:
- const { token, clientId } = require('./config.json');
+ const token = process.env.TOKEN;

node_modules/dotenv/lib/cli-options.js

@@ -0,0 +1,17 @@
+const re = /^dotenv_config_(encoding|path|quiet|debug|override|DOTENV_KEY)=(.+)$/
+
+module.exports = function optionMatcher (args) {
+  const options = args.reduce(function (acc, cur) {
+    const matches = cur.match(re)
+    if (matches) {
+      acc[matches[1]] = matches[2]
+    }
+    return acc
+  }, {})
+
+  if (!('quiet' in options)) {
+    options.quiet = 'true'
+  }
+
+  return options
+}