add repository url

Author: rebornix

package.json

@@ -12,6 +12,10 @@
   "engines": {
     "vscode": "^1.25.0"
   },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Microsoft/vscode-pull-request-github.git"
+  },
   "categories": [
     "Other"
   ],