Merge pull request #136 from pduranti/master

changes
Update _includes/script-tags-head.html
Update _layouts/home.html
orders
Merge pull request #137 from aleml86/master

changes in orders
Update _posts/guide/apendix/2012-08-21-API-directory.markdown
favion
Merge pull request #138 from aleml86/master

favicon
Update _includes/script-tags-head.html
Merge pull request #139 from aleml86/master

new analytics out
orders,directory,applications
Merge remote-tracking branch 'upstream/master'
Merge pull request #140 from aleml86/master

applications api, api directory
´de
descriptions in api directory
Merge pull request #141 from aleml86/master

api directory descriptions
orders scenarrios
Merge pull request #142 from aleml86/master

orders scenarios
New guides for shipping with MercadoEnvios