Merge pull request #264 from kojix2/win_fiddle

Fix Jupyter module to load Fiddle

Author: kojix2

lib/iruby/jupyter.rb

@@ -31,6 +31,7 @@ def kernelspec_dir(data_dir=nil)
 
       # returns %APPDATA%
       def windows_user_appdata
+        require 'fiddle/import'
         check_windows
         path = Fiddle::Pointer.malloc(2 * 300) # uint16_t[300]
         csidl_appdata = 0x001a