增加说明

wandercn · Jul 6, 2021 · 18ff428 · 18ff428
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diff --git a/README.md b/README.md
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 A cross platform hot compilation tool
 
+By monitoring the modification of the project directory file, the recompilation and running are automatically triggered. Running directory and monitoring change directory can be different.
+
 # install
 
     go get -u github.com/wandercn/hotbuild