Update README.md

Author: deepakpurti

README.md

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 # Fall-Detection
 Human Fall Detection from a Video Clip of a CCTV camera feed
+
+## Execution
+Run 'falldetection_via_videoclip.m' .
+This would read 'video.mp4' and detect the falling action of a human in that video.
+An e-mail alert would be send to user after fall detection.
+
+## Modification
+To edit sender and receiver's email addresses, modify 'sendemail.m' .
+