Ensure that a custom committer, if given, makes it into the git commit.

lib/gaga.rb

@@ -147,14 +147,15 @@ def head
   # Commits the the value into the git repository with the given commit message
   def save(options)
     author = options[:author] ? Grit::Actor.new(options[:author][:name], options[:author][:email]) : nil
+    committer = options[:committer] ? Grit::Actor.new(options[:committer][:name], options[:committer][:email]) : nil
 
     index = git.index
     if head
       commit = head.commit
       index.current_tree = commit.tree
     end
     yield index
-    index.commit(options[:message], :parents => Array(commit), :author => author, :head => branch) if index.tree.any?
+    index.commit(options[:message], :parents => Array(commit), :author => author, :committer => committer, :head => branch) if index.tree.any?
   end
 
   # Converts the value to yaml format

test/gaga_test.rb

@@ -34,14 +34,20 @@
     end
 
     it "writes String values to keys with global custom log data" do
-      store = Gaga.new(:repo => tmp_dir, :branch => :lady, :author => {:name => 'Test', :email => 'test@example.com'})
+      store = Gaga.new(
+        :repo => tmp_dir, 
+        :branch => :lady, 
+        :author => {:name => 'Test', :email => 'test@example.com'},
+        :committer => {:name => 'Test2', :email => 'test2@example.com'}
+      )
 
       store.set(key, "value", {:message => "Custom message"})
       store[key].must_equal "value"
 
       entry = store.log(key).first
       entry['message'].must_equal "Custom message"
       entry['author'].must_equal({'name' => 'Test', 'email' => 'test@example.com'})
+      entry['committer'].must_equal({'name' => 'Test2', 'email' => 'test2@example.com'})
     end
 
     it "does not create empty commit" do