Version 1.1 of Snake (SnakeHead)

* Scope of SNAKE VERSION 1.1 (Snake running automatically and 1 Maze
added)
* 1. There will be only one particular maze.
*     It must be written in an extensible fashion so that later(in next
versions) on upgrading the stages, different mazes could be used.
* 2. There is only snakeHead, no snakeTail is present. SnakeHead is
extensible to facilitate addition of tail feature of given length in the
later versions.
* 3. There are two type of bricks pathBricks and mazeBricks.
* 4. Depending on the location of the last pathBrick the snakeHead has
traversed(NWES), it's head would be shown as directed to the
corresponding direction.
* 5. BUG FIX: SnakeHead should NOT be allowed to moved in back
direction.
Merge branch 'master' of https://github.com/monish001/SnakeInHTML5