This is first version of Shell with commands ls, pwd, exit and mkdir
Added cd command and checkstyle lib, styles fixed
Added cat command
Added FileCommand class and cp command
Added rm command
Added move command, ready for pull request
Deleted test folder
CheckStyle fixed
Fixed bugs with copy, remove, move and some small features
Deleted extra files
Deleted build.xml
Merged akhtyamovpavel:shell
Merge branch 'akhtyamovpavel-shell'