windows系统下ink！&canvas-node安装

 因为官网给的命令行指令不是win系统的，所有今天安装了一天都没整好，到处查帖子。最终在substrate官网下面找到了项目的github链接，因此用本篇文章记录一下。

1.ink!

git链接：https://github.com/paritytech/cargo-contract

安装指令：

• Step 1: rustup component add rust-src.

• Step 2: Install binaryen in a version >= 99:

  • Debian/Ubuntu: apt-get install binaryen
  • Homebrew: brew install binaryen
  • Arch Linux: pacman -S binaryen
  • Windows: binary releases are available

  There's only an old version in your distributions package manager? Just use a binary release.

• Step 3: cargo install --force cargo-contract

检验：cargo contract -V 

2.canvas-node

git地址：https://github.com/paritytech/canvas-node

安装指令：cargo install canvas-node --git https://github.com/paritytech/canvas-node.git --force

If it fails to build/install, add the cargo --locked flag. The installation process will then use the same versions as the Cargo.lock in this repository to ensure that the most recent working version of Substrate will be used.

检验：canvas -V

补充：ink!安装之后cargo执行指令和之前有点区别，加了点变化。

• cargo contract new my_contract
• cargo +nightly contract build
• cargo contract check 
• cargo contract test