started using typhoeus; problem: can´t return result to controller

Gemfile.lock

@@ -28,7 +28,7 @@ GEM
       activemodel (= 3.0.5)
       activesupport (= 3.0.5)
     activesupport (3.0.5)
-    arel (2.0.9)
+    arel (2.0.10)
     builder (2.1.2)
     crack (0.1.8)
     erubis (2.6.6)
@@ -43,9 +43,10 @@ GEM
     httparty (0.7.7)
       crack (= 0.1.8)
     i18n (0.5.0)
-    jquery-rails (1.0)
-      rails (~> 3.0)
+    jquery-rails (1.0.5)
+      railties (~> 3.0)
       thor (~> 0.14)
+    json (1.5.1)
     mail (2.2.19)
       activesupport (>= 2.3.6)
       i18n (>= 0.4.0)
@@ -83,6 +84,9 @@ GEM
     thor (0.14.6)
     treetop (1.4.9)
       polyglot (>= 0.3.1)
+    typhoeus (0.2.4)
+      mime-types
+      mime-types
     tzinfo (0.3.27)
     youtube_it (1.4.2)
       builder
@@ -97,8 +101,10 @@ DEPENDENCIES
   hashie
   httparty
   jquery-rails (>= 0.2.6)
+  json
   rails (= 3.0.5)
   ruby_parser
   sqlite3
   sqlite3-ruby
+  typhoeus
   youtube_it