Update README.md

Added linux (debian/ubuntu) packages required to build a PDF file, from a latex-less linux box.
Merge pull request #297 from jfunez/patch-1

Update README.md with Linux build instructions.
Fix Aura links
Merge pull request #298 from robertd/gh-pages

Fix Aura links
Fixes #299 - adds a missing Views dep.
Adds expanded examples for the 0.9.2->0.9.10 changelog in the appendix.
Adding initial changes for #290
rename pngs to fix PDF build.
Merge pull request #296 from stephenplusplus/gh-pages

PDFs can be built again!
Extending the introduction to the book.
Merge branch 'gh-pages' of https://github.com/addyosmani/backbone-fundamentals into gh-pages

* 'gh-pages' of https://github.com/addyosmani/backbone-fundamentals:
  rename pngs to fix PDF build.
Fixes to TOC, further updates to prelude, new builds.
Some further minor changes to the intro.