Added CMakeLists.txt to File-Downloader

Makefile

@@ -0,0 +1,23 @@
+# Makefile for FileDownloader project
+# Works on macOS & linux
+
+CC = g++
+FLAGS = -Wall -std=c++11
+LIBS = -lcurl
+
+all: FileDownloader
+
+FileDownloader: main.o downloader.o console.o
+	$(CC) $(FLAGS) $^ -o $@ $(LIBS)
+
+main.o: main.cpp
+	$(CC) $(FLAGS) -c $<
+
+downloader.o: downloader.cpp
+	$(CC) $(FLAGS) -c $<
+
+console.o: console.cpp
+	$(CC) $(FLAGS) -c $<
+
+clean:
+	rm -f *.o FileDownloader