Rename, Update Docs and Prepare for Release (#9)

Co-authored-by: Guilherme Rugai Freire <41879254+GRFreire@users.noreply.github.com>
Co-authored-by: N-R-K <79544946+N-R-K@users.noreply.github.com>
Co-authored-by: NRK <nrk@disroot.org>
Co-authored-by: Arthur Williams <taaparthur@gmail.com>
Co-authored-by: eylles <ed.ylles1997@gmail.com>

icon/Makefile

@@ -7,6 +7,6 @@ install:
 	for f in $(ICONS); do \
 		dir="$(DESTDIR)$(PREFIX)/share/icons/hicolor/$${f%.png}/apps"; \
 		mkdir -p "$$dir"; \
-		cp "$$f" "$$dir/sxiv.png"; \
-		chmod 644 "$$dir/sxiv.png"; \
+		cp "$$f" "$$dir/nsxiv.png"; \
+		chmod 644 "$$dir/nsxiv.png"; \
 	done