display a pin on the map for each venue in the index page
add map to venues index
Merge branch 'pins-on-index'
Merge branch 'master' of github.com:moosechaser/no-smoking

Conflicts:
	app/controllers/venues_controller.rb
Merge branch 'master' of github.com:moosechaser/no-smoking
Merge pull request #8 from moosechaser/index-layout

Index layout