bump handlebars_assets

Gemfile

@@ -83,12 +83,12 @@ gem "entypo-rails", "2.2.3"
 
 # JavaScript
 
-gem "backbone-on-rails",                                "1.1.2.1"
-gem "handlebars_assets",                                "0.20.1"
-gem "jquery-rails",                                     "4.0.4"
-gem "jquery-ui-rails",                                  "5.0.3"
-gem "js_image_paths",                                   "0.0.2"
-gem "js-routes",                                        "1.0.1"
+gem "backbone-on-rails", "1.1.2.1"
+gem "handlebars_assets", "0.20.2"
+gem "jquery-rails",      "4.0.4"
+gem "jquery-ui-rails",   "5.0.3"
+gem "js_image_paths",    "0.0.2"
+gem "js-routes",         "1.0.1"
 
 source "https://rails-assets.org" do
   gem "rails-assets-jquery",                              "1.11.2" # Should be kept in sync with jquery-rails

Gemfile.lock

@@ -341,10 +341,10 @@ GEM
       rubocop (~> 0.20)
     haml (4.0.6)
       tilt
-    handlebars_assets (0.20.1)
+    handlebars_assets (0.20.2)
       execjs (~> 2.0)
       multi_json (~> 1.0)
-      sprockets (~> 2.0)
+      sprockets (>= 2.0.0, < 4.0)
       tilt (~> 1.2)
     hashie (3.4.1)
     hike (1.2.3)
@@ -781,7 +781,7 @@ DEPENDENCIES
   guard-rspec (= 4.5.2)
   guard-rubocop (= 1.2.0)
   haml (= 4.0.6)
-  handlebars_assets (= 0.20.1)
+  handlebars_assets (= 0.20.2)
   http_accept_language (= 2.0.5)
   i18n-inflector-rails (= 1.0.7)
   jasmine (= 2.2.0)