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+2021-04-14  Masaya Tojo  <masaya@tojo.tokyo>
+
+	Edit `README.md` file.
+	* README.md: Rename title from `extract-green-color` to `Extract-green-color`.
+	[Requirements]: New section.
+	[Installation]: New section.
+	[Usage]: New section.
+	[License]: New section.
+
+	Initial commit.