Modified Makefile for Linux and updated Visual Studio project files for Linux support, Added infromation to README

linux/Makefile

@@ -4,9 +4,10 @@
 CXX = g++
 CXXFLAGS = -Wall -g  -mavx -msse4 # -Wall for more warnings, -g for debugging symbols
 INC_DIR = include
-LIBS = -lfreeglut -lglew32 -lSOIL -lopengl32 -lglu32
-LIB_DIR = ..\libs
-LDFLAGS = -L$(LIB_DIR)
+LIBS = -lglut  -lSOIL -lGL -lGLEW -lGLU
+LIB_DIRS = /usr/lib /usr/lib/x86_64-linux-gnu
+
+LDFLAGS = $(addprefix -L, $(LIB_DIRS))
 
 # Directories
 SRC_DIR = src
@@ -45,7 +46,7 @@ $(BUILD_DIR)/%.o: $(SRC_DIR)/%.s
 
 # Clean target
 clean:
-	rm -rf $(BUILD_DIR)
+	rm  $(BUILD_DIR)/*
 
 # Debug build target
 debug: CXXFLAGS += -DDEBUG -g
@@ -58,4 +59,4 @@ run: all
 rundebug: debug
 	gdb ./$(EXECUTABLE_PATH)
 
-.PHONY: all clean debug run rundebug
+.PHONY: all clean debug run rundebug