Creating a Buildr - usability improvements

[britzl]

It wasn't clear to me that I needed to select the green button labeled 1 after I had selected Defold as Game Engine.

The Source Connection drop-down was empty and at first I didn't understand that I needed to create a connection using the Connect option in the menu on the left.

[herman-rogers]

Thanks for the feedback on this - we'll improve the user flow in the coming couple of days to make this more clear.