ServerRoot "/Users/ravi/Documents/Development/Backbone/backboneboilerplate"
Não deve ser alterado - isso deve apontar para a pasta de instalação do Apache; de acordo com o link
The ServerRoot directive sets the directory in which the server lives. Typically it will contain the subdirectories conf/ and logs/. Relative paths in other configuration directives (such as Include or LoadModule, for example) are taken as relative to this directory.