经过命令行安装Android的sdk组件

通过命令行安装Android的sdk组件
http://stackoverflow.com/questions/17963508/how-to-install-android-sdk-build-tools-on-the-command-line

android list sdk --all

android update sdk -u -a -t <package no.>

android update sdk -u -a -t 1,2,3,4,..,n