Minor edits and punctionation in chapter 01-introduction

Light editing and punctuation fixes in chapter 01 (including adding serial commas,
which is debatable - they are recommended in American style guides, but may be less
accepted elsewhere).
Merge pull request #282 from dcmaf/gh-pages

Light editing and punctuation fixes in chapter 01
Use appendTo instead of $.append
Merge pull request #283 from eastridge/gh-pages

Minor thorax code example update
Fixes #281 - updating recommendations for model binder
Updates/Fixes #279 with revised text
Adding local copies of exercise 2 resources, updating URLs
Last fixes required for local builds to work again. Updated builds of index, ePub etc.
Merge pull request #285 from mdb/exercise-1-edits

Exercise 1 edits
Fixes for #263
Update Thorax url
Merge pull request #288 from eastridge/gh-pages

Update Thorax url
Continuin to fine-tune language and grammar in exercise 1