Added Makefile for convenience

Makefile

@@ -0,0 +1,27 @@
+JCC = javac
+
+JFLAGS = -g
+
+default:
+	@echo \"make build\" to compile Java classes
+	@echo \"make run\" to run Driver class
+	@echo \"make jar\" to compile executable jar
+	@echo \"make clean\" to clean up artifacts
+build: 
+	$(JCC) $(JFLAGS) Driver.java
+run: 
+	$(JCC) $(JFLAGS) Driver.java
+	java Driver
+jar:
+	$(JCC) $(JFLAGS) Driver.java
+	@echo "Manifest-Version: 1.0" > manifest.txt
+	@echo "Class-Path: ." >> manifest.txt
+	@echo "Main-Class: Driver" >> manifest.txt
+	@echo "" >> manifest.txt
+	jar -cmf manifest.txt MTGClone.jar *.class
+	$(RM) manifest.txt
+	$(RM) *.class
+clean:
+	$(RM) *.class
+	$(RM) manifest.txt
+	$(RM) MTGClone.jar