docs: update stale and readme install.

for afterward methods merge.

Author: Kin-Zhang

.github/issue_stale.yaml

@@ -0,0 +1,30 @@
+name: Close inactive issues
+on:
+  schedule:
+    - cron: "35 11 * * *"
+
+env:
+  DAYS_BEFORE_ISSUE_STALE: 14
+  DAYS_BEFORE_ISSUE_CLOSE: 14
+
+jobs:
+  close-issues:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@v5
+        with:
+          days-before-issue-stale: ${{ env.DAYS_BEFORE_ISSUE_STALE }}
+          days-before-issue-close: ${{ env.DAYS_BEFORE_ISSUE_CLOSE }}
+          stale-issue-label: "stale"
+          stale-issue-message: |
+            This issue is stale because it has been open for ${{ env.DAYS_BEFORE_ISSUE_STALE }} days with no activity. 
+            Please consider close it if the discussion already solve your question. Or it will be closed automatically if no further activity occurs. 
+          close-issue-message: |
+            This issue is being closed because it has been stale for ${{ env.DAYS_BEFORE_ISSUE_CLOSE }} days with no activity.
+            You can still comment if you have further questions or information to add.
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/issue_stale.yaml

@@ -63,6 +63,7 @@ CUDA package (need install nvcc compiler), the compile time is around 1-5 minute
 mamba activate deflow
 # CUDA already install in python environment. I also tested others version like 11.3, 11.4, 11.7, 11.8 all works
 cd assets/cuda/mmcv && python ./setup.py install && cd ../../..
+cd assets/cuda/chamfer3D && python ./setup.py install && cd ../../..
 ```
 
 Or another environment setup choice is [Docker](https://en.wikipedia.org/wiki/Docker_(software)) which isolated environment, you can pull it by.