feat: add -V and --version e2e test

test/index.js

@@ -10,3 +10,10 @@ test('shows up help message without any args', async t => {
   const { stdout } = await execa(rootCommand);
   t.snapshot(stdout);
 });
+
+['-V', '--version'].forEach(function(i) {
+  test('shows version with arg ' + i, async t => {
+    const { stdout } = await execa(rootCommand, [i]);
+    t.snapshot(stdout);
+  });
+});

test/snapshots/index.js.md

@@ -20,3 +20,27 @@ Generated by [AVA](https://ava.li).
       fetchtask <key>  Fetches any task as per the key supplied␊
       showkeys         Shows keys of all the completed tasks␊
       showcommands     Shows all commands available`
+
+## shows help message with arg --version
+
+> Snapshot 1
+
+    '1.1.8'
+
+## shows help message with arg -V
+
+> Snapshot 1
+
+    '1.1.8'
+
+## shows version with arg --version
+
+> Snapshot 1
+
+    '1.1.8'
+
+## shows version with arg -V
+
+> Snapshot 1
+
+    '1.1.8'