Added my student solution
Changed anchor tag that links to railstutorial

Anchor tag text stated 'Chapter 10,' yet links to chapter 11.  Modified text to reflect this.
Project Euler solutions
Etch-a-sketch solution
Update project_media.md
Add my solution to Javascript/jQuery exercise
Update javascript_basics.md
Update project_ruby.md
Update project_js_jquery.md

added link to jQuery project.
Added my solutions to the HTML/CSS exercise
Added my project rails solution
Update project_html_css.md
eventbrite project
Update link to my solution
Add my solution to Ruby on Rails project

Hello, I've just finished my implementation of this tutorial and I would really appreciate if you could add it to this file.
Thanks in advance.
Merge pull request #641 from chasmani/patch-2

Added my student solution
Merge pull request #642 from NatalieLow/patch-1

Changed anchor tag that links to railstutorial
Merge pull request #643 from lcf0285/patch-2

Project Euler solutions
Merge pull request #645 from sandiegodj/master

Fix typo
Merge pull request #648 from antoniosb/patch-4

Add my solution to the Ruby Project