[clangd][vscode] Add npm helper commands to package/release the extension.

Summary: Help to fix https://github.com/clangd/clangd/issues/159.

Reviewers: ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D68080

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@372980 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/clangd/clients/clangd-vscode/DEVELOPING.md b/clangd/clients/clangd-vscode/DEVELOPING.md
index a15d050..e888aba 100644
--- a/clangd/clients/clangd-vscode/DEVELOPING.md
+++ b/clangd/clients/clangd-vscode/DEVELOPING.md
@@ -48,6 +48,6 @@
   # For the first time, you need to login in the account. vsce will ask you for
     the Personal Access Token, and remember it for future commands.
   $ vsce login llvm-vs-code-extensions
-  # Make sure the screenshots in the readme are rendered in VSCode marketplace.
-  $ vsce publish --baseImagesUrl https://raw.githubusercontent.com/llvm/llvm-project/master/clang-tools-extra/clangd/clients/clangd-vscode/
+  # Publish the extension to the VSCode marketplace.
+  $ npm run publish
 ```
diff --git a/clangd/clients/clangd-vscode/package.json b/clangd/clients/clangd-vscode/package.json
index eaea920..e7efd8a 100644
--- a/clangd/clients/clangd-vscode/package.json
+++ b/clangd/clients/clangd-vscode/package.json
@@ -33,7 +33,9 @@
         "compile": "tsc -watch -p ./",
         "postinstall": "node ./node_modules/vscode/bin/install",
         "format": "clang-format --style=LLVM -i --glob=\"{src,test}/*.ts\"",
-        "test": "node ./node_modules/vscode/bin/test"
+        "test": "node ./node_modules/vscode/bin/test",
+        "package": "vsce package --baseImagesUrl https://raw.githubusercontent.com/llvm/llvm-project/master/clang-tools-extra/clangd/clients/clangd-vscode/",
+        "publish": "vsce publish --baseImagesUrl https://raw.githubusercontent.com/llvm/llvm-project/master/clang-tools-extra/clangd/clients/clangd-vscode/"
     },
     "dependencies": {
         "jsonc-parser": "^2.1.0",