recyclerView

first test to do:ste

1. Click a button and programatically launch a new fragment

2. Show a list of data in a fragment using a RecyclerView (list view)

3 a) Click a cell in the recycler view and display a Toast message

3 b) Click a cell in the recycler view and programatically launch another fragment

3 c) Click a cell in the recycler view and programatically launch another fragment - displaying the data that was in the cells