Link SFML in release mode

Author: kamirr

examples/spinning-numbers/spinning-numbers.pro

@@ -7,7 +7,7 @@ DESTDIR=build
 OBJECTS_DIR=build/obj
 
 QT       += core gui
-LIBS     += -lsfml-graphics-d -lsfml-window-d -lsfml-system-d -lQSFML
+LIBS     += -lsfml-graphics -lsfml-window -lsfml-system -lQSFML
 QMAKE_CXXFLAGS += -std=c++11 -Wno-sign-compare -g
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets