Correct spelling of sieve_of_eratosthenes directory

Correct another misspelling of Eratosthenes

Correct one more misspelling of Eratosthenes

Correct misspellings of Sieve of Eratosthenes

Move npm script

removed explicit Promise declaration from gulpfile

Added Maze creation example

I saw that there isn’t anything on disjoint sets or mazes under the
examples so I implemented the process of making a maze.

I have visualized a maze creation before
(https://github.com/nadr0/Maze). I have always been a fan of
visualizing data structures or algorithms and I though this was the
perfect chance!

My code is rather large but it gets the job done.

I

Implemented counting sort

Fullscreen

css needs to be fixed when enters fullscreen