Switch from the github proxy to using git:directory resource

Author: dkotter

.github/blueprints/blueprint.json

@@ -12,8 +12,9 @@
     {
       "step": "installPlugin",
       "pluginData": {
-        "resource": "url",
-        "url": "https://github-proxy.com/proxy/?repo=10up/classifai&branch=stable"
+        "resource": "git:directory",
+        "url": "https://github.com/10up/classifai",
+        "ref": "stable"
       },
       "options": {
         "activate": true