Add mail gem. Fix rdoc at version 3.8 due to its json dependency in more recent versions.

Gemfile

@@ -29,6 +29,12 @@ gem 'capistrano', '2.5.21'
 # https://github.com/jnunemaker/twitter
 gem 'twitter', '1.6.0'
 
+# We are sending mail. The latest version is just fine.
+gem 'mail'
+
+# Anything newer than version 3.8 seems to require the json gem, which we don't have at the production site.
+gem 'rdoc', '3.8'
+
 # To use debugger (ruby-debug for Ruby 1.8.7+, ruby-debug19 for Ruby 1.9.2+)
 # gem 'ruby-debug'
 # gem 'ruby-debug19', :require => 'ruby-debug'

Gemfile.lock

@@ -54,7 +54,6 @@ GEM
     hashie (1.0.0)
     highline (1.6.9)
     i18n (0.5.0)
-    json (1.6.4)
     mail (2.2.19)
       activesupport (>= 2.3.6)
       i18n (>= 0.4.0)
@@ -94,8 +93,7 @@ GEM
       rdoc (~> 3.4)
       thor (~> 0.14.4)
     rake (0.8.7)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (3.8)
     simple_oauth (0.1.5)
     thor (0.14.6)
     treetop (1.4.10)
@@ -120,7 +118,9 @@ DEPENDENCIES
   cancan (= 1.6.5)
   capistrano (= 2.5.21)
   devise (= 1.2.1)
+  mail
   mysql2 (= 0.2.7)
   rails (= 3.0.9)
   rake (= 0.8.7)
+  rdoc (= 3.8)
   twitter (= 1.6.0)