如果你和我一样经常使用终端程序，这个小程序一定可以帮到你。他能将终端窗口变成类似雷神或CS那样的下拉窗口，非常酷。
可以从这里下载 http://visor.binaryage.com/
这个软件需要SIMBL ，如果你没有安装，要先安装这个。
http://www.culater.net/software/SIMBL/SIMBL.php

SIMBL (SIMple Bundle Loader) – pronounced like “symbol” or “cymbal” – enables hacks and plugins. For instance, SIMBL enables PithHelmet to enhance Safari.

之后将下载下来的文件解压，将解压后的文件拷贝至/Library/Application Support/SIMBL/Plugins，之后再重新启动你的终端你就可以看到效果了。 默认的快捷启动键是Ctrl+`
visor： http://visor.binaryage.com/

Installation

Install SIMBL and make sure you have latest SIMBL 0.9.x
Place Visor.bundle into ~/Library/Application Support/SIMBL/Plugins (create this directory if it does not exist)
Relaunch Terminal.app – You should now see the Visor Status Menu Item
Configure your keyboard trigger by selecting the Visor Status Menu Item -> Visor Preferences … and edit your keyboard hot-key
You can now trigger Visor with your hot-key from any application to get an instant terminal session.

To hide Visor, you can either:
re-trigger with your key-combo
optionally you can click off of the Visor window