update READMEs

common/cinnamon/README

@@ -1,19 +0,0 @@
-This theme uses libsass/gulp to process the sass/*.scss. Never edit any of the .css files manually.
-
-How to edit this theme:
-
-1. Install `nodejs` and `npm`
-
-2. Install `gulp`
-
-    sudo npm install --global gulp
-
-3. Execute the following from the directory containing `gulpfile.js`
-
-    npm install
-
-4. Edit the sass/*.scss files
-
-5. Regenerate the .css files by executing from the directory containing `gulpfile.js`
-
-    gulp

common/cinnamon/README.md

@@ -0,0 +1,20 @@
+This theme uses libsass/gulp to process the sass/*.scss. Never edit any of the .css files manually.
+
+#### Editing the theme
+
+* Install `nvm` (https://github.com/creationix/nvm)
+
+* Install `gulp`
+
+        npm i -g gulp
+
+* Execute the following from the directory containing `gulpfile.js`
+
+        npm i
+
+* Edit the sass/*.scss files
+
+* Regenerate the .css files by executing from the directory containing `gulpfile.js`
+
+        gulp
+