add ColorPickerPreference

ColorPickerPreference 颜色选择器
add Memento

Memento 保证在系统配置改变时，Activity中的某些数据可以简单安全的保持不变
add gradle-mvn-push

gradle-mvn-push 方便的将Gradle的Artifacts上传到Maven仓库
add Great Android Sensing Toolkit
add SensorManager
add GPSLogger
add Pedometer
add link
Sync Chinese Traditional Version
add secure category
add link
assort dev and test tools
add link
Sync Chinese Traditional Version
Update README.md
add android-datepicker

android-datepicker 将Android 4.0的datepicker兼容到Android2.2++
add Android Auto Scroll ViewPager

Android Auto Scroll ViewPager Android自动滚动 轮播循环的ViewPager
Add HoloGraphLibrary

HoloGraphLibrary 绘制现状图、柱状图、饼状图
Add Contact Me
Update README.md