Merge pull request #94 from programmiersportgruppe/master

Shutdown WEBrick server used in installed app flow

lib/google/api_client/auth/installed_app.rb

@@ -92,6 +92,7 @@ module Google
           :Logger => WEBrick::Log.new(STDOUT, 0),
           :AccessLog => []
         )
+        begin
           trap("INT") { server.shutdown }
 
           server.mount_proc '/' do |req, res|
@@ -106,6 +107,9 @@ module Google
 
           Launchy.open(auth.authorization_uri.to_s)
           server.start
+        ensure
+          server.shutdown
+        end
         if @authorization.access_token
           if storage.respond_to?(:write_credentials)
             storage.write_credentials(@authorization)