1. 是什么？－－是一个可以通过javascript,html,css等web技术开发移动App的的开发框架，媲美原生App体验和性能，目前支持IOS和Android平台。
2. 为什么能做这个？ －－Titanium开发工具Titanium Studio，引入JavaScript解释器，根据JavaScript代码，生成原生工程(IOS||Android)，然后打包成原生应用。
3. 顺便提下phoneGap,很多人比较Titanium和PhoneGap,PhoneGap不负责UI层，仅提供了WebView浏览器包装Web App而已，Titanium则提供原生UI和数据通信。
4. 配置Titanium开发环境
－－refer to http://docs.appcelerator.com/titanium/latest/#!/guide/Setting_up_Studio-section-37540095_SettingupStudio-installingstudio
－－到官网注册，激活账号，根据不同平台下载，我下载的是Linux 64位 100多mb
－－开始配置
System Requirements
Your system environment must meet the following requirements to run Titanium Studio:
Operating System: A recent version of Windows, OS X or Ubuntu
Memory: 2 GB RAM (available memory, rather than total memory)
Java Runtime: Oracle JDK (no other brand of Java is suitable) (只能是 Oracle JDK )
Node.js: required for the Titanium command-line tools like the CLI, Alloy and Node.ACS.
值得说明的是： 内存要足够大。 需要有2g的空闲内容。 而且只能是Oracle JDK ( 来这里下载 linux 64位包：http://download.oracle.com/otn-pub/java/jdk/8u25-b17/jdk-8u25-linux-x64.tar.gz )
Node.js 0.10.13 or later.
on Linux, Titanium Studio also requires the GTK windowing system
Installing Titanium Studio
The installation procedure for Titanium Studio differs depending on the platform.
Linux
Once downloaded, open the Titanium Studio .zip archive file by right-clicking on it and choosing the Extract Here menu option
Open the resulting folder, and run the TitaniumStudio executable to launch the application.
Logging in to Studio
On initial launch, Studio asks you to provide your Appcelerator Network account credentials. Studio requires an internet connection to authenticate the user to the Appcelerator cloud
Enter your Appcelerator Network credentials.
Optionally click Proxy Setup... to configure your proxy settings if needed. (我把chrome中的SSL代理VPN关闭，就能登陆了，不用输入Proxy Settings)
Click Login.
Studio remembers your login credentials until you sign out of Studio.
配置升级的步骤：
1 Window -> Preferences
Studio -> Platforms