First commit for otagui project.

Test: no test is required.
Change-Id: I29bbe71df3087b006540903b7b86d124da07d913
diff --git a/tools/otagui/README.md b/tools/otagui/README.md
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+# README
+This is a GUI for generating OTA package, using OTA_from_target_files command.
+
+