extconf.rb in annoy-rb-0.3.0

- old
+ new

@@ -4,6 +4,6 @@
 
 $CXXFLAGS << " -std=c++14 -march=native -DANNOYLIB_MULTITHREADED_BUILD"
 $INCFLAGS << " -I$(srcdir)/src"
 $VPATH << "$(srcdir)/src"
 
-create_makefile('annoy/annoy')
+create_makefile('annoy/annoyext')