added the skip_existing option for .travis.yml

yingzhanguri · yingzhanguri · commit 7c94d9ffceac · 2020-03-03T17:30:55.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -70,3 +70,4 @@ deploy:
         tags: true
         repo: zhanglab/psamm
     distributions: "sdist bdist_wheel"
+    skip_existing: true
