Add :author option to commit

Signed-off-by: Scott Chacon <[email protected]>

Author: koke

lib/git/base.rb

@@ -256,6 +256,7 @@ def reset_hard(commitish = nil, opts = {})
     # options:
     #   :add_all
     #   :allow_empty
+    #   :author
     def commit(message, opts = {})
       self.lib.commit(message, opts)
     end

lib/git/lib.rb

@@ -372,6 +372,7 @@ def commit(message, opts = {})
       arr_opts = ["-m '#{message}'"]
       arr_opts << '-a' if opts[:add_all]
       arr_opts << '--allow-empty' if opts[:allow_empty]
+      arr_opts << "--author '#{opts[:author]}'" if opts[:author]
       command('commit', arr_opts)
     end