added documentation for 'command pattern'
add interface for the eletronic device
added Command interface and 'Television Receiver'
first commit of TurnTv on/off
first commit of TurnTv Up and TVRemote.java
renamed EletronicDevice.java to ElectronicDevice.java
replaced single with double quote
first commit of .gitignore
first commit
added TurnItAllOff
added reference
implemented the undo command
Merge pull request #1 from DEV1Ecole/command-pattern

Command pattern