always use shell script to generate apps.json, remove js version

Gets rid of duplicated functionality, but allows passing a filename
argument to write to a different file instead of `apps.json`.

apps.json

@@ -7,7 +7,10 @@
 # Otherwise nothing has changed. GitHub Pages will automatically
 # create apps.json as your site is hosted, or if you're hosting
 # yourself you can run bin/create_apps_json.sh
-# 
+#
+# If you serve the store from localhost for development/testing,
+# the loader looks for apps.local.json instead, you can run
+# `bin/create_apps_json.sh apps.local.json` to create that file.
 # =================================================================
 
 # Uncomment the following line if you only want explicitly listed

bin/create_apps_json.sh

@@ -13,17 +13,26 @@
 #
 # If you do this, please do not attempt to commit your modified
 # apps.json back into the main BangleApps repository!
+#
+# You can pass an optional filename to this script, and it will write
+# to that instead, apps.local.json is used when opening the loader on localhost
+outfile="${1:-apps.json}"
 
 cd `dirname $0`/..
-echo "[" > apps.json
+echo "[" > "$outfile"
+first=1
 for app in apps/*/; do 
  echo "Processing $app..."; 
  if [[ "$app" =~ ^apps/_example.* ]]; then
  echo "Ignoring $app"
  else
- cat ${app}metadata.json >> apps.json
+ if [ $first -eq 1 ]; then
+ first=0;
+ else
+ echo "," >> "$outfile"
+ fi;
+ cat ${app}metadata.json >> "$outfile"
 # echo ",\"$app\"," >> apps.json # DEBUG ONLY
- echo "," >> apps.json
  fi
 done
-echo "null]" >> apps.json
+echo "]" >> "$outfile"

package.json

@@ -9,7 +9,7 @@
  "scripts": {
  "lint-apps": "eslint ./apps --ext .js",
  "test": "node bin/sanitycheck.js && eslint ./apps --ext .js",
- "update-local-apps": "node bin/update_local_apps_json.js",
+ "update-local-apps": "./bin/create_apps_json.sh apps.local.json",
  "local": "npm-watch & npx http-server -a localhost -c-1",
  "start": "npx http-server -c-1"
  },