fix makefile, update readme

Author: reednel

Makefile

@@ -11,15 +11,18 @@ OBJECT_FILES = $(addprefix obj/,$(SOURCE:.cpp=.o))
 ifdef SystemRoot # Wndows
     RM = del /Q
 	RMOBJ = obj\*.o
+	MKDIR =
 else 			 # Unix
 	RM = rm -f
 	RMOBJ = obj/*.o
+	MKDIR = @mkdir -p $(@D)
 endif
 
 all: $(OBJECT_FILES)
 	$(CC) -g $(OBJECT_FILES) -o $(TARGET)
 
 obj/%.o: src/%.cpp $(HEADER_FILES)
+	$(MKDIR)
 	$(CC) $(FLAGS) -o $@ $<
 
 clean:

README.md

@@ -12,9 +12,18 @@ This program requires C++20 or higher.
 
 ## Compilation
 
-Unix: `make`
+### Unix
 
-Windows: `work in progress`
+`make`
+
+### Windows
+
+```cmd
+mkdir obj
+make
+```
+
+In addition to C++20, Windows requires a special means to run the provided makefile. The MinGW Package Manager provides a lightweight make function. It is recommended to follow [this guide](https://linuxhint.com/run-makefile-windows/), however any method for compiling C++ should suffice.
 
 ## Usage