docs: add .scriptName usage, update output to reflect actual CLI output (#44)

Author: kiprasmel

index.html

@@ -59,21 +59,22 @@ <h1 class="pink-highlight">Yargs be a node.js library fer hearties tryin' ter pa
 
         <pre>
           <code class="hljs language-javascript">
-  #!/usr/bin/env node
-
-  require('yargs')
-    .usage('$0 &lt;cmd&gt; [args]')
-    .command('hello [name]', 'welcome ter yargs!', (yargs) => {
-      yargs.positional('name', {
-        type: 'string',
-        default: 'Cambi',
-        describe: 'the name to say hello to'
-      })
-    }, function (argv) {
-      console.log('hello', argv.name, 'welcome to yargs!')
+#!/usr/bin/env node
+
+require('yargs')
+  .scriptName("pirate-parser")
+  .usage('$0 &lt;cmd&gt; [args]')
+  .command('hello [name]', 'welcome ter yargs!', (yargs) => {
+    yargs.positional('name', {
+      type: 'string',
+      default: 'Cambi',
+      describe: 'the name to say hello to'
     })
-    .help()
-    .argv
+  }, function (argv) {
+    console.log('hello', argv.name, 'welcome to yargs!')
+  })
+  .help()
+  .argv
 
           </code>
         </pre>
@@ -82,18 +83,18 @@ <h1 class="pink-highlight">Yargs be a node.js library fer hearties tryin' ter pa
 
         <pre>
           <code class="hljs language-bash">
-  $ example.js --help
+  $ node example.js --help
           </code>
         </pre>
 
         <div class="instructions"> To get this output: </div>
 
         <pre>
           <code class="hljs language-bash">
-  example.js &lt;cmd&gt; [args]
+  pirate-parser &lt;cmd&gt; [args]
 
   Commands:
-    hello [name]  welcome ter yargs!
+    pirate-parser hello [name]  welcome ter yargs!
 
   Options:
     --help  Show help                                                    [boolean]