Update readme, fix exception handling

Author: 75lb

README.md

@@ -5,8 +5,6 @@
 [![Node.js CI](https://github.com/jsdoc2md/jsdoc-to-markdown/actions/workflows/node.js.yml/badge.svg)](https://github.com/jsdoc2md/jsdoc-to-markdown/actions/workflows/node.js.yml)
 [![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
 
-# jsdoc-to-markdown
-
 _Upgraders, please read the [release notes](https://github.com/jsdoc2md/jsdoc-to-markdown/releases)_
 
 # jsdoc-to-markdown

bin/cli.js

@@ -39,12 +39,11 @@ if (options.help) {
 
   /* input files (jsdoc-options) required from here */
   /* input validation */
-  try {
-    options.files = options.files || []
-    assert.ok(options.files.length || options.source, 'Must supply either --files or --source')
-  } catch (err) {
+  options.files = options.files || []
+  if (!(options.files.length || options.source || options.configure)) {
+    console.error('Must supply either --files, --source or --configure')
     console.log(cli.usage)
-    handleError(err)
+    process.exit(1)
   }
 
   /* jsdoc2md --json */
@@ -100,4 +99,5 @@ function parseCommandLine () {
 
 function handleError (err) {
   console.error(err)
+  process.exit(1)
 }