Update README.md

Chandlercjy · Apr 19, 2018 · b41edda · b41edda
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diff --git a/README.md b/README.md
@@ -23,6 +23,7 @@ pip install dataclasses # 将在python 3.7中成为标准库
 
 pip install OnePy_trader
 pip install --upgrade OnePy_trader
+# pip的OnePy_trader有可能有时不是最新，建议将库克隆到本地使用。
 ```
 
 Getting Started