Added .desktop and an initial Makefile.

Makefile

@@ -0,0 +1,25 @@
+# Stolen from:
+# https://github.com/mmstick/tv-renamer/blob/3f9e274e1b2300209172d4b3c991e9e7952b7259/Makefile
+
+DESTDIR = /usr
+version = $(shell awk 'NR == 3 {print substr($$3, 2, length($$3)-2)}' Cargo.toml)
+
+all:
+	cargo build --release
+
+install:
+	install -Dm 755 "target/release/hammond-gtk" "${DESTDIR}/bin/hammond"
+	ln -sf "${DESTDIR}/bin/hammond" "${DESTDIR}/bin/hammond-gtk"
+	install -Dm 644 "assets/hammond.desktop" "${DESTDIR}/share/applications/hammond.desktop"
+	install -Dm 644 README.md "${DESTDIR}/share/doc/hammond/README"
+	install -Dm 644 LICENSE "${DESTDIR}/share/licenses/hammond/COPYING"
+
+uninstall:
+	rm "${DESTDIR}/bin/hammond"
+	rm "${DESTDIR}/bin/hammond-gtk"
+	rm "${DESTDIR}/share/applications/hammond.desktop"
+	rm "${DESTDIR}/share/doc/hammond/README"
+	rm "${DESTDIR}/share/licenses/hammond/COPYING"
+
+clean:
+	cargo clean