remove "(beta)" from title

felt about time :)

src/index.html

@@ -42,7 +42,7 @@
             src="<%= require('./img/yarnspinner.svg') %>"
             id="logo"
           />
-          <h1>Try Yarn Spinner <span id="header-beta">(beta)</span></h1>
+          <h1>Try Yarn Spinner</h1>
           <p id="version" class="text-muted">
             <small
               >Version: <%= htmlWebpackPlugin.options.gitHash %><span