UI调整优化

lib/difxapi.dl

@@ -0,0 +1,21 @@
+Example:
+  nvm install v0.10.32                  Install a specific version number
+  nvm use 0.10                          Use the latest available 0.10.x release
+  nvm run 0.10.32 app.js                Run app.js using node v0.10.32
+  nvm exec 0.10.32 node app.js          Run `node app.js` with the PATH pointing to node v0.10.32
+  nvm alias default 0.10.32             Set default node version on a shell
+
+Note:
+  to remove, delete, or uninstall nvm - just remove the `$NVM_DIR` folder (usually `~/.nvm`)
+
+Xupnei:~ xuwenwei$ nvm install v16.5.0
+
+Version 'v16.5.0' not found - try `nvm ls-remote` to browse available versions.
+Xupnei:~ xuwenwei$ 
+Xupnei:~ xuwenwei$ nvm install v16.5.0
+Downloading and installing node v16.5.0...
+Downloading https://nodejs.org/dist/v16.5.0/node-v16.5.0-darwin-arm64.tar.gz...
+######################################################################### 100.0%
+Computing checksum with shasum -a 256
+Checksums matched!
+Now using node v16.5.0 (npm v7.19.1)