Fix Makefiles

ClientLibrary/Makefile

@@ -5,4 +5,7 @@ shared:
 static:
 	go build -buildmode=c-archive -o libpsiphontunnel.a PsiphonTunnel.go
 
+clean:
+	rm libpsiphontunnel.so libpsiphontunnel.h
+
 .PHONY: static

ClientLibrary/example/Makefile

@@ -8,5 +8,5 @@ libpsiphontunnel.so: ../PsiphonTunnel.go
 	go build -buildmode=c-shared -o libpsiphontunnel.so ../PsiphonTunnel.go
 
 clean:
-	rm libpsiphontunnel.so PsiphonTunnel.h main main.o
+	rm libpsiphontunnel.so libpsiphontunnel.h main main.o