drop support for using an array in the help option

Just use a template literal instead.

index.js

@@ -41,10 +41,6 @@ module.exports = (opts, minimistOpts) => {
 		minimistOpts.string.splice(index, 1);
 	}
 
-	if (Array.isArray(opts.help)) {
-		opts.help = opts.help.join('\n');
-	}
-
 	const pkg = typeof opts.pkg === 'string' ? require(path.join(parentDir, opts.pkg)) : opts.pkg;
 	const argv = minimist(opts.argv, minimistOpts);
 	let help = redent(trimNewlines((opts.help || '').replace(/\t+\n*$/, '')), 2);

readme.md

@@ -96,9 +96,6 @@ The help text you want shown.
 
 The input is reindented and starting/ending newlines are trimmed which means you can use a [template literal](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/template_strings) without having to care about using the correct amount of indent.
 
-<del>If it's an array each item will be a line.</del><br>
-*(Still supported, but you should use a template literal instead.)*
-
 The description will be shown above your help text automatically.
 
 Set it to `false` to disable it altogether.

test.js

@@ -9,10 +9,10 @@ global.Promise = Promise;
 test('return object', t => {
 	const cli = m({
 		argv: ['foo', '--foo-bar', '-u', 'cat', '--', 'unicorn', 'cake'],
-		help: [
-			'Usage',
-			'  foo <input>'
-		]
+		help: `
+			Usage
+			  foo <input>
+		`
 	}, {
 		'alias': {u: 'unicorn'},
 		'default': {meow: 'dog'},
@@ -29,7 +29,10 @@ test('return object', t => {
 });
 
 test('support help shortcut', t => {
-	const cli = m(['unicorn', 'cat']);
+	const cli = m(`
+		unicorn
+		cat
+	`);
 	t.is(cli.help, indentString('\nCLI app helper\n\nunicorn\ncat\n', 2));
 });