added ViewModel
added tests to ViewModel
refactoring
added Calculator
added build.gradle
bug fix
refactoring
refactoring
simplification of functions calculate()
simplification of functions getInputStatus()
bugfix
Travis test
Travis test
'refactoring'
renamed class
Revert "renamed class"

This reverts commit 854acf5d03e53cd11c49ff6243eaa988625735e6.
edited title
added fake test for View
bugfix ViewModel
Merge pull request #116 from alexandermyasnikov/lab2-mvvm-Myasnikov

Мясников - Лабораторная работа #2