关于Snapcraft的详细介绍请看：
http://www.linuxdiyf.com/linux/19333.html
snapcraft 2.17 版本新功能：
A python plugin rewrite, combining the python2 and python3 plugins into one. This new plugin creates leaner snaps, works better with regards to build environments, separates stage-packages from package brought in with pip and solves many latent bugs from the previous incantation of the python plugins.
More assertion related goodies, snapcraft-register-key and snapcraft list-keys are new commands added to this release.
The organize keyword for parts now supports globbing.
snapcraft 安装命令：
sudo add-apt-repository ppa:snappy-dev/tools
sudo apt-get update
sudo apt-get install snappy-tools bzr snapcraft
Ubuntu 16.04 LTS 用户更新命令：
sudo apt update && sudo apt install snapcraft
Snapcraft examples 也已经更新，命令：
sudo apt install snapcraft-examples