Merge pull request #13 from brianbollerman/master

New Updates
Added moving functionality to left/right key

Earlier enter/space key was moving the block to left and down. But now,
left/right key (when pressed once) move the block to extreme left and
(when pressed twice) move it back to original position. If not pressed
then block drops at the original position.

There are few bugs in the code that I will be editing.
Merge pull request #18 from brianbollerman/devanganaS

Devangana s