extconf.rb in cldwalker-bond-0.1.4

- old
+ new

@@ -1,3 +1,4 @@
 require "mkmf"
+have_header 'readline/readline.h'
 dir_config 'readline_line_buffer'
-create_makefile 'readline_line_buffer'
\ No newline at end of file
+create_makefile 'readline_line_buffer'