added Calculator.java
Merge branch 'master' of https://github.com/syarik/fizteh-java-2013
deleted a waste folder
Changed passing arguments to commands.
Division by zero and empty input
delete package Calculator
Ненулевой код возврата на пустой строке
add ShellMain.java
error correction 1
Calculator. Nikolai 296
Calculator. Minor fix.
Version 2
Fixed again
Код коллеги Ивановского.
For fuck's sake. ><
Corrected the calculator. Added shell.
Допилил копирование Shell, Ивановский 295
Добавила обработку случаев переполнения integer и деления на 0.
Added examples to task#3
Added new class "Location" than contains absolute path to current directory and allows user to change or get it.