Reinstated Makefile so we don't force people to use maven.

Makefile

@@ -0,0 +1,25 @@
+JAVA_BUILD_OPTS = -g -source 1.8 -target 1.8 -cp .:$(CP)
+CP = `find lib -name "*.jar" -printf %p:`
+CP_SPACE = `ls lib/*.jar`
+
+.PHONY: ipfs
+ipfs: 
+	rm -rf build
+	mkdir -p build
+	echo "Name: IPFS Java HTTP Client library" > def.manifest
+	javac $(JAVA_BUILD_OPTS) -d build `find src/main/java -name \*.java`
+	jar -cfm IPFS.jar def.manifest \
+	    -C build org
+	rm -f def.manifest
+
+.PHONY: tests
+tests: 
+	rm -rf build
+	mkdir -p build
+	echo "Name: IPFS Java HTTP Client library Tests" > def.manifest
+	echo "Class-Path: " $(CP_SPACE)>> def.manifest
+	javac $(JAVA_BUILD_OPTS) -d build -cp $(CP) `find src -name \*.java`
+	jar -cfm Tests.jar def.manifest \
+	    -C build org
+	rm -f def.manifest
+	java -cp $(CP):Tests.jar org.junit.runner.JUnitCore org.ipfs.api.Test