Merge pull request #3 from ekremkaraca/master

Some contribs v1...
Styling and minor fixes.
'App/Web Servers' section added.
More Sublime Text plugins added.
BracketHighlighter for Sublime Text added.
Update README.md
Quiz section updated.
Update README.md
Merge pull request #4 from thesp0nge/master

Update README.md
HTTPie and Rubular added to the tools section.
Documentation subsection in Tools.
More test-related gems.
Spring added to Testing section.
Structural update.
Project manifesto updated.
Merge branch 'master' of https://github.com/dreikanter/ruby-bookmarks
Faker gem added to the Testing section.
Pundit added.
Timecop gem added to Testing section.
Testing section added to Books.