Groovy devel

I made some classes for app_chooser application.
I made a new package "org.ros.android.roboapp", and there is RosAppActivity class in this package.
If you'd like to make an application for app_chooser, you can acomplish that by inheriting this class.(and rewrote some existing classes to fit these new classes) 
Now I'm writing the documentation to inform how to use in detail.
In addition, the new app_chooser and the new applications for app_chooser are on the following site.
https://bitbucket.org/KazutoMurase/rosandroid