adding information about specifying image sizes
Merge branch 'master' of github.com:zenorocha/como-perder-peso
adicionando texto sobre a importancia da performance
adicionando ancoras e novo item no menu
trocando a cor de fundo
adding bonus section
adding anchor for titles
fixing menu style
Merge branch 'master' of github.com:zenorocha/como-perder-peso