update to SDL2

Makefile

@@ -1,15 +1,15 @@
 FILE := sdl_tmplt
 TARGET := $(FILE)
 
-CFLAGS := $(shell sdl-config --cflags)
+CFLAGS := $(shell sdl2-config --cflags)
 ifdef WIN32
 LIBS := -lopengl32 -lglu32 -lmingw32
 CC := mingw32-gcc
 TARGET := $(TARGET).exe
 else
-LIBS := -lGL -lGLU `sdl-config --libs`
+LIBS := -lGL -lGLU `sdl2-config --libs`
 endif
-LDFLAGS := $(LIBS) $(shell sdl-config --libs)
+LDFLAGS := $(LIBS) $(shell sdl2-config --libs)
 
 
 all:	$(TARGET)