Updates makefile and settles on GNU make style if statements

Makefile

@@ -24,6 +24,16 @@ install-bin: build/goldberry
 	install -d ${DESTDIR}${BINDIR}
 	install -m 0755 ./build/${BINARY} ${DESTDIR}${BINDIR}
 
+.PHONY: install-desktop
+install-desktop:
+ifeq ($(shell uname), Linux)
+	install -d ${DESTDIR}${DATAROOTDIR}/applications
+	install -m 0644 ./${BINARY}.desktop ${DESTDIR}${DATAROOTDIR}/applications
+	install -d ${DESTDIR}${DATAROOTDIR}/pixmaps
+	install -m 0644 ./${BINARY}-icon.png ${DESTDIR}${DATAROOTDIR}/pixmaps
+	-update-desktop-database 2> /dev/null
+endif
+
 .PHONY: clean
 clean: 
 	rm -f ./${BINARY}.1.gz 2> /dev/null
@@ -33,4 +43,7 @@ clean:
 uninstall: clean
 	rm -f ${DESTDIR}${MAN1DIR}/${BINARY}.1.gz
 	rm -f ${DESTDIR}${BINDIR}/${BINARY}
+	rm -f ${DESTDIR}${DATAROOTDIR}/applications/${BINARY}
+	rm -f ${DESTDIR}${DATAROOTDIR}/pixmaps/${BINARY}-icon.png
+	-update-desktop-database 2> /dev/null
 

goldberry.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=Goldberry
+GenericName=Smallnew Client
+Comment=View gopher and gemini sites over the internet
+Terminal=false
+Categories=Network;WebBrowser;GTK;
+Exec=goldberry
+Icon=goldberry-icon