add optinmonster script, fix makefile, remove es6

website/Gemfile

@@ -1,3 +1,3 @@
 source "https://rubygems.org"
 
-gem "middleman-hashicorp", "0.3.32"
+gem "middleman-hashicorp", "0.3.34"

website/Gemfile.lock

@@ -78,7 +78,7 @@ GEM
       rack (>= 1.4.5, < 2.0)
       thor (>= 0.15.2, < 2.0)
       tilt (~> 1.4.1, < 2.0)
-    middleman-hashicorp (0.3.32)
+    middleman-hashicorp (0.3.34)
       bootstrap-sass (~> 3.3)
       builder (~> 3.2)
       middleman (~> 3.4)
@@ -153,7 +153,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  middleman-hashicorp (= 0.3.32)
+  middleman-hashicorp (= 0.3.34)
 
 BUNDLED WITH
    1.16.1

website/Makefile

@@ -1,4 +1,4 @@
-VERSION?="0.3.32"
+VERSION?="0.3.34"
 
 build:
 	@echo "==> Starting build in Docker..."
@@ -7,8 +7,9 @@ build:
 		--rm \
 		--tty \
 		--volume "$(shell pwd):/website" \
+		-e "ENV=production" \
 		hashicorp/middleman-hashicorp:${VERSION} \
-		ENV=production bundle exec middleman build --verbose --clean
+		bundle exec middleman build --verbose --clean
 
 website:
 	@echo "==> Starting website in Docker..."

website/source/assets/javascripts/analytics.js

@@ -1,9 +1,9 @@
-document.addEventListener('DOMContentLoaded', () => {
-  track('.downloads .download a', el => {
+document.addEventListener('DOMContentLoaded', function() {
+  track('.downloads .download a', function(el) {
     return {
       event: 'Download',
       category: 'Button',
-      label: `Packer | v${el.href.match(/\/(\d+\.\d+\.\d+)\//)[1]}`
+      label: 'Packer | v' + el.href.match(/\/(\d+\.\d+\.\d+)\//)[1]
     }
   })
 })

website/source/layouts/layout.erb

@@ -130,7 +130,12 @@
       analytics.page();
       }}();
     </script>
-
+    <script>
+      // optinmonster
+      var om597a24292a958,om597a24292a958_poll=function(){var b=0;return function(d,c){clearInterval(b);b=setInterval(d,c)}}();
+      !function(b,d,c){if(b.getElementById(c))om597a24292a958_poll(function(){if(window.om_loaded&&!om597a24292a958)return om597a24292a958=new OptinMonsterApp,om597a24292a958.init({s:"35109.597a24292a958",staging:0,dev:0,beta:0})},25);else{var e=!1,a=b.createElement(d);a.id=c;a.src="//a.optnmstr.com/app/js/api.min.js";a.async=!0;a.onload=a.onreadystatechange=function(){if(!(e||this.readyState&&"loaded"!==this.readyState&&"complete"!==this.readyState))try{e=om_loaded=!0,om597a24292a958=new OptinMonsterApp,
+      om597a24292a958.init({s:"35109.597a24292a958",staging:0,dev:0,beta:0}),a.onload=a.onreadystatechange=null}catch(f){}};(document.getElementsByTagName("head")[0]||document.documentElement).appendChild(a)}}(document,"script","omapi-script");
+    </script>
     <script type="application/ld+json">
       {
         "@context": "http://schema.org",