Changed "git co" to "git checkout". In a default git install on Ubuntu, git co is not a valid command.
Changed "git co" to "git checkout". In a default git install on Ubuntu, git co is not a valid command.

derFunk/Sami,FriendsOfPHP/Sami,edos-io/Sami,jeskew/Sami,derFunk/Sami,php-opencloud/Sami,piwik/Sami,TiS/Sami,FriendsOfPHP/Sami,scribenet/Sami,forging2012/Sami,TobyMaxham/Sami,piwik/Sami,edos-io/Sami,forging2012/Sami,jeskew/Sami,php-opencloud/Sami,TiS/Sami,scribenet/Sami,laborautonomo/Sami,TobyMaxham/Sami