add View & ViewModel
add contents of View & ViewModel
Deleted extra lines
Changed Model
Deleted excess lines
Update SphereSectorTest.java

change in delta on 1e-10
Update Main.java
Update ViewModel.java

delete comments
Update ViewModel.java
Update ViewModel.java
Merge pull request #123 from PogorelskyIliya/lab2-mvvm-CalculateSquare

Погорельский Илья - Лабораторная #2