Added student solutions
Merge pull request #500 from wingyu/master

Adding Etch_a_Sketch Project to Web Development 101 chapter
Merge pull request #501 from JulsFelic/master

Added student solutions
fix bugs
added event_manager solution
Adding my solution for ceasar_cipher encrypt

Please accept my pull request :)

thx
Update project_js_jquery.md
Update project_recursion.md

Moving on and forward.

Another solution set.
Added Tic Tac Toe solution!
Added calculator solution
My Student Solution
Add my solution to HTML/CSS exercise
Merge pull request #502 from RobotOptimist/patch-10

added event_manager solution
Merge pull request #503 from gabrielms/patch-1

Adding my solution for ceasar_cipher encrypt
Merge pull request #505 from sahilda/patch-4

Update project_recursion.md
Merge pull request #506 from muzfuz/patch-9

Added Tic Tac Toe solution!
Merge pull request #507 from muzfuz/patch-10

Added calculator solution
Merge pull request #509 from delorenzo/patch-1

Add my solution to HTML/CSS exercise
linking Hangman solution
Update javascript_basics.md

Add my Euler Solutions.