ubuntu@ubuntu-artful:~/playground/snap$ snapcraft --version
snapcraft, version 2.33+17.10
ubuntu@ubuntu-artful:~/playground/snap$ find .
.
./snapcraft.yaml
./hooks
./hooks/configure
./hooks/install
./hooks/remove
./snap
ubuntu@ubuntu-artful:~/playground/snap$ snapcraft 
Preparing to pull playground 
Pulling playground 
Preparing to build playground 
Building playground 
Staging playground 
Priming playground 
Snapping 'playground' |                                                                                                                                                                             
Snapped playground_0.1_amd64.snap
ubuntu@ubuntu-artful:~/playground/snap$ unsquashfs -l playground_0.1_amd64.snap 
Parallel unsquashfs: Using 2 processors
2 inodes (2 blocks) to write

squashfs-root
squashfs-root/command-playground.wrapper
squashfs-root/meta
squashfs-root/meta/gui
squashfs-root/meta/snap.yaml
ubuntu@ubuntu-artful:~/playground/snap$