Update precompiled pdfium for mac to chromium/3071 and add version info file with minimal build instructions

custom_widgets/yacreader_dark_menu.h

@@ -0,0 +1,14 @@
+#ifndef YACREADER_DARK_MENU_H
+#define YACREADER_DARK_MENU_H
+
+#include <QMenu>
+
+
+class YACReaderDarkMenu : public QMenu
+{
+  Q_OBJECT
+	public:
+		YACReaderDarkMenu(QWidget * parent = 0);
+};
+
+#endif // YACREADER_DARK_MENU_H