D-9

v-3.1
---
1. set list in the spinner

	==> done
D-9

v-3.2
---
1. set listener

	==> done
D-9

v-3.2a
---
1. add selection => "No selection"

	==> n/w
D-9

v-3.2b
---
1. select "No selecton" => "No selection" selected

	==> done
D-10(D-9)

v-1.0
---
1. start activity

	==> done
D-10(D-9)

v-2.0
---
1. save memo

	==> done