chore(build) Build demo with correct script link

- Previously minified JS would always be linked (even if not built)
- Non-minified link will now be used if `--no-minify` is passed

Resolves #2711

Author: joshgoebel

demo/index.html

@@ -47,7 +47,11 @@ <h2><%- language.prettyName %></h2>
 
   </div>
 
+  <% if (minify) { %>
   <script src="../highlight.min.js"></script>
+  <% } else { %>
+  <script src="../highlight.js"></script>
+  <% } %>
   <script src="jquery-2.1.1.min.js"></script>
   <script src="perfect-scrollbar.min.js"></script>
   <script src="demo.js"></script>

tools/build_browser.js

@@ -25,7 +25,7 @@ async function buildBrowser(options) {
   languages = filter(languages, options["languages"]);
 
   await installDocs();
-  await installDemo(languages);
+  await installDemo(languages, { minify: options.minify });
 
   log("Preparing languages.")
   await Promise.all(
@@ -58,7 +58,7 @@ async function buildBrowser(options) {
   log("-----");
 }
 
-async function installDemo(languages) {
+async function installDemo(languages, { minify }) {
   log("Writing demo files.");
   mkdir("demo");
   installDemoStyles();
@@ -70,7 +70,7 @@ async function installDemo(languages) {
   const styles = css.map((el) => (
     { "name": _.startCase(path.basename(el,".css")), "path": el }
   ));
-  renderTemplate("./demo/index.html", "./demo/index.html", { styles , languages });
+  renderTemplate("./demo/index.html", "./demo/index.html", { styles, languages, minify });
 }
 
 async function installDocs() {