refactor, add contributors, use mocha directly for package.json, add cache tests
add Seb Gotvitch
Merge pull request #34 from DigitalCuisine/readme-testing-details

Added basic installation details in the "Testing" part
add missing -d  in testing section
add @olance to contributors
add instance test
Bug fixe in content/block helper

The data give to the template was lost in contentFor helpers, because
the context of the function call in the helper was the ExpressHbs
instance and not the context of the helper call.
Merge pull request #36 from Gotvitch/block-content-bug

Bug fixe in content/block helper
Merge branch 'master' of https://github.com/barc/express-hbs into barc-master

Conflicts:
	example/app.js
	lib/hbs.js