🚀 Update README.md

sunhailin-Leo · sunhailin-Leo · commit 6345aa74e278 · 2019-10-11T16:37:22.000+08:00
diff --git a/README.md b/README.md
@@ -6,6 +6,7 @@ Automatically compile and configure ffmpeg, Python 3.7.2(default), PyAV, OpenCV,
 <h3 id="ProjectEnv">Project Env</h3>
 
 * System: CentOS (7.4 & 7.5); Other Version is waiting for test.
+* User: Must running by **root**.
 
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