diff --git a/vendor/README b/vendor/README
deleted file mode 100644
index a0517e71..00000000
--- a/vendor/README
+++ /dev/null
@@ -1,21 +0,0 @@
-# Vendor files are populated by the build script:
-
-## What the build script does
-
-Using this repo, run `npm install`... the latest versions of:
-
-* `CodeMirror` (https://github.com/codemirror/CodeMirror) is installed.<br><br>
-* **TODO**: `jsonlint` () is installed.
-* **TODO**: `less` () is installed.
-* **TODO**: `lz-string-unsafe` (https://github.com/openstyles/lz-string-unsafe) is installed.
-* **TODO**: `node-semver` () is installed.
-* **TODO**: `stylus-lang` () is installed.<br><br>
-* The necessary build tools; see `devDependencies` in the `package.json`.
-
-## Running the build script
-
-Use `npm run build` to update packages in the `node_modules` folder & update the vendor folder.
-
-The following changes are made:
-
-* Only the essential CodeMirror files are copied directly from the `node_modules` folder to `vendor/codemirror`; see the `vendor/codemirror/README` for specifics.
diff --git a/vendor/README.md b/vendor/README.md
new file mode 100644
index 00000000..cb44413f
--- /dev/null
+++ b/vendor/README.md
@@ -0,0 +1,24 @@
+# Vendor files are populated by the build script:
+
+## What the build script does
+
+Using this repo, run `npm install`... the latest versions of:
+
+* `CodeMirror` (https://github.com/codemirror/CodeMirror) is installed.
+* `jsonlint` (https://github.com/zaach/jsonlint) is installed.
+* `less` (https://github.com/less/less.js) is installed.
+* `lz-string-unsafe` (https://github.com/openstyles/lz-string-unsafe) is installed.<br><br>
+* **TODO**: `node-semver` (https://github.com/eight04/node-semver-bundle) is installed.
+* **TODO**: `stylus-lang` (https://github.com/eight04/stylus-lang-bundle) is installed.<br><br>
+* The necessary build tools are installed; see `devDependencies` in the `package.json`.
+
+## Running the build script
+
+Use `npm run build` to first update the packages in the `node_modules` folder & then update the vendor folder.
+
+The following changes are made:
+
+* `CodeMirror`: Only the essential files are copied directly from the `node_modules` folder to `vendor/codemirror`; see the `vendor/codemirror/README` for specifics.
+* `jsonlint`: The uncompressed `lib/jsonlint.js` is copied directly to `vendor/jsonlint`.
+* `less`: The compressed `dist/less.min.js` file is copied directly into `vendor/less`.
+* `lz-string-unsafe`: The compressed `lz-string-unsafe.min.js` file is copied directly into `vendor/lz-string-unsafe`.