Update Bower documentation (1.8.4)

assets/javascripts/templates/pages/about_tmpl.coffee

@@ -132,7 +132,7 @@ credits = [
     'https://raw.githubusercontent.com/bottlepy/bottle/master/LICENSE'
   ], [
     'Bower',
-    '2017 Bower contributors',
+    '2018 Bower contributors',
     'MIT',
     'https://github.com/bower/bower.github.io/blob/1057905c18d899106f91372e6cca7ef54a91d60f/package.json#L20'
   ], [

lib/docs/scrapers/bower.rb

@@ -2,7 +2,7 @@ module Docs
   class Bower < UrlScraper
     self.name = 'Bower'
     self.type = 'bower'
-    self.release = '1.8.2'
+    self.release = '1.8.4'
     self.base_url = 'https://bower.io/docs/'
     self.root_path = 'api'
     self.links = {
@@ -16,7 +16,7 @@ module Docs
     options[:skip] = %w(tools about)
 
     options[:attribution] = <<-HTML
-      &copy; 2017 Bower contributors<br>
+      &copy; 2018 Bower contributors<br>
       Licensed under the MIT License.
     HTML
   end