Added uninstall.

Makefile

@@ -23,3 +23,14 @@ install: ascii
 	mkdir -pv $$prefix/bin $$prefix/share/man/man1 \
 	&& cp -v ascii $$prefix/bin/ \
 	&& cp -v doc/ascii.1 $$prefix/share/man/man1/
+
+uninstall:
+	@prefix="$(PREFIX)"; \
+	if [[ ! $$prefix ]]; then \
+		read -p $$'\033[1mWhere do you want to uninstall from? (default: /usr/local) \033[0m' prefix; \
+	fi; \
+	if [[ ! $$prefix ]]; then \
+		prefix="/usr/local"; \
+	fi; \
+	echo "Deleting..."; \
+	rm -rvf $$prefix/bin/ascii $$prefix/share/man/man1/ascii.1