add a sample demo

[szitguy]

would you please add a sample demo to show how to use the class？

[imbryk]

Right now here you can find examples how to use it - the links point to commits comparison to show exact changes that were needed to be done do make things work.

But sure - I'll add a proper demo just to show how to use this class

[szitguy]

Thanks for your reply. I have read the link and it is helpful. Now I'm using your library in my project and it works fine.

[ly-android]

how to use it?