added makefiles to compile with mingw

example/SampleDLL/.gitignore

@@ -0,0 +1,2 @@
+*.o
+*.dll

example/SampleDLL/Makefile

@@ -0,0 +1,11 @@
+CC = g++
+CFLAGS  = -Wall -g -DSAMPLEDLL_EXPORTS
+LDFLAGS = -shared
+
+OBJ = SampleDLL.o
+
+SampleDLL.dll: $(OBJ)
+	$(CC) $(LDFLAGS) -o SampleDLL.dll $(OBJ)
+
+%.o: %.cpp
+	$(CC) $(CFLAGS) -c $<

example/SampleDLL/SampleDLL.cpp

@@ -7,4 +7,4 @@ SAMPLEDLL_API int addNumbers(int a, int b)
 	return a + b;
 }
 
-}
+}

example/SampleDLL/SampleDLL.h

@@ -8,4 +8,4 @@ extern "C" {
 
 SAMPLEDLL_API int addNumbers(int a, int b);
 
-}
+}