switch vcr web backend to fakeweb, add vcr support for nico seiga tests

Gemfile.lock

@@ -53,7 +53,6 @@ GEM
     activesupport (3.2.12)
       i18n (~> 0.6)
       multi_json (~> 1.0)
-    addressable (2.3.4)
     arel (3.0.2)
     awesome_print (1.1.0)
     aws-s3 (0.6.3)
@@ -74,7 +73,6 @@ GEM
       capistrano
     chronic (0.9.1)
     coderay (1.0.9)
-    crack (0.3.2)
     daemons (1.1.9)
     delayed_job (3.0.5)
       activesupport (~> 3.0)
@@ -89,6 +87,7 @@ GEM
       multi_json (~> 1.0)
     factory_girl (4.2.0)
       activesupport (>= 3.0.0)
+    fakeweb (1.3.0)
     highline (1.6.18)
     hike (1.2.1)
     i18n (0.6.4)
@@ -200,9 +199,6 @@ GEM
       rack
       raindrops (~> 0.7)
     vcr (2.4.0)
-    webmock (1.11.0)
-      addressable (>= 2.2.7)
-      crack (>= 0.3.2)
     webrobots (0.1.1)
     whenever (0.8.2)
       activesupport (>= 2.3.4)
@@ -222,6 +218,7 @@ DEPENDENCIES
   delayed_job_active_record
   diff-lcs
   factory_girl
+  fakeweb
   ffaker!
   mechanize!
   memcache-client
@@ -245,5 +242,4 @@ DEPENDENCIES
   uglifier (>= 1.0.3)
   unicorn
   vcr
-  webmock
   whenever