Replaced build script with Makefile and removed upload script as it is now in tools

Makefile

@@ -0,0 +1,16 @@
+BUILDDIR=.build
+_BIN= fib.bin
+BIN = $(patsubst %,$(BUILDDIR)/%,$(_BIN))
+
+$(BUILDDIR)/%.bin: src/%.z80
+	@zasm -w -i $< -o $@
+
+$(BUILDDIR):
+	@mkdir $(BUILDDIR)
+
+all: $(BUILDDIR) $(BIN)
+
+.PHONE: clean
+
+clean:
+	@rm -df $(BUILDDIR)/*.bin $(BUILDDIR)/*.lst .build