Fixed issue #47

Makefile

@@ -1,4 +1,4 @@
-VERSION = git-20120316
+VERSION = git-20120328
 
 CC      = gcc
 CFLAGS  = -ansi -Wall -pedantic -O2

window.c

@@ -206,7 +206,7 @@ void win_open(win_t *win) {
 	win_set_title(win, "sxiv");
 
 	classhint.res_name = "sxiv";
-	classhint.res_class = "sxiv";
+	classhint.res_class = "Sxiv";
 	XSetClassHint(e->dpy, win->xwin, &classhint);
 
 	if (!options->hide_bar) {