Update 2.1.-Installation.md

Author: qwertygc

docs/doc/en/2.1.-Installation.md

@@ -49,6 +49,9 @@ Next, go to Settings and select Privacy and Security.  Scroll down until you see
 
 From now on, QualCoder should start without issues.
 
+You can install QualCoder without admin right. You must copy the binaries in /Users/mylogin/Applications directory. You must delete the attribute on the application directory, typing on the terminal:
+```xattr  -d com.apple.quarantine /Users/mylogin/Applications/QualCoder.app```
+
 **Install from source code:**
 
 Download the source code. Read and apply the section for macOS source code usage in the **Readme.md** file.