Update contained.html
[toc] only first level navpoint
[toc] only tabs
Merge branch 'toc' of github.com:chok/epub.js into toc

Conflicts:
	src/parser.js
Merge pull request #136 from jmbhalodia/patch-1

Update contained.html
Merge pull request #149 from chok/toc

Toc updated to use xpath