[#112] Improved remote url detection for spec repo

lib/cocoapods/command/repo.rb

@@ -67,7 +67,7 @@ module Pod
 
       def read_url
         Dir.chdir(dir) do
-          @output = git("remote -v")
+          @output = git('config --get remote.origin.url')
         end
       end
 

lib/cocoapods/command/setup.rb

@@ -28,7 +28,7 @@ module Pod
       def already_push?
         if master_repo_exists?
           read_master_repo_remote_command.run
-          read_master_repo_remote_command.output.include? master_repo_url_with_push
+          read_master_repo_remote_command.output.chomp == master_repo_url_with_push
         else
           false
         end