_ Fix for first three issues noticed.
Update index.md
Correct reference to underscore.js
Bad description of what happens when adding an item to ToDo list
Minor edits
Update getByCid example

Checking `todoCid` instead of `todo2` against `myTodo` makes more sense in this context.
Replace galleryApp with todoApp
Fix underscore template syntax
fixes backbone.paginator project url
Merge pull request #229 from madflo/patch-1

fixes backbone.paginator project url
Merge pull request #228 from zhengjia/gh-pages

Fix underscore template syntax
Merge pull request #221 from jreyes33/gh-pages

Minor code examples fixes
Merge pull request #220 from theyak/gh-pages

Some initial updates
Fixes #215 - incorrect escaping
Fixes #219 - Simplifying language around other MVC frameworks. Adding a description of Angular as Ember has been dropped.
Fixes #203 - misprints
Fixes #223 - multiple inheritance issue
Clean-up, adding cover to index, building new binaries for formats, adding instructions to readme for build.
Removing chapter on Sinatra, MongoDB, Haml with Backbone
Removing existing chapter on REST. We'll replace this later.