to create the project in Sencha we need to follow these Steps 

1).Sencha command Should be Download and installed first.

2).download the touch 2.2.0  SDK and 

3).IN TERMINAL  Change the Directory to touch 2.2.0 

and write command.

iPap010s-iMac:touch-2.2.0 ipapstudent$  sencha generate app Myapp /Users/ipapstudent/Desktop/Myapp

1)command is  sencha generate app

2)parameters 

3)   .Myapp is projectname

4).the location where we want to store or created path of the project directory Users/ipapstudent/Desktop/Myapp

follow these steps