apply ocornut suggested cimgui structure

Makefile

@@ -0,0 +1,53 @@
+#
+# Cross Platform Makefile
+# Compatible with Ubuntu 14.04.1 and Mac OS X
+
+OBJS = cimgui.o
+OBJS += ../imgui/imgui.o
+OBJS += ../imgui/imgui_draw.o
+OBJS += ../imgui/imgui_demo.o
+
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S), Linux) #LINUX
+	ECHO_MESSAGE = "Linux"
+
+	OUTPUTNAME = cimgui.so
+	CXXFLAGS = -I../../
+	CXXFLAGS += -Wall
+	CXXFLAGS += -shared -fPIC
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(UNAME_S), Darwin) #APPLE
+	ECHO_MESSAGE = "Mac OS X"
+
+	OUTPUTNAME = cimgui.dylib
+	CXXFLAGS = -I/usr/local/include
+	CXXFLAGS += -Wall
+	LINKFLAGS = -dynamiclib
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(OS), Windows_NT)
+	ECHO_MESSAGE = "Windows"
+
+	OUTPUTNAME = cimgui.dll
+	CXXFLAGS = -I../../
+	CXXFLAGS += -Wall
+	CXXFLAGS += -shared
+	LINKFLAGS = -limm32
+	CFLAGS = $(CXXFLAGS)
+endif
+
+.cpp.o:
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+all:imgui_example
+	@echo Build complete for $(ECHO_MESSAGE)
+
+imgui_example:$(OBJS)
+	$(CXX) -o $(OUTPUTNAME) $(OBJS) $(CXXFLAGS) $(LINKFLAGS)
+
+clean:
+	rm $(OBJS)