The obstacle is more pragmatic: the gem/bundler check for installed version of refinerycms and refuses to install.
I don't want to install version 2 of refinery, import the Worldpress blog and then upgrade to version 3. I have too much work already done with version 3.
I have moved to my own solution, writing a rake task and use Nogogiri. At this time is is fine for the text content but I have a lot to work to images as well. I don't want to import the same image more than once, so I will have to create two (2) tables:
1- For each post (old site), import text (html content) (aka 10K entries)
1.1 Create a new post
1.2 Copy html from old to post to the new one
2- Scan html content for images
3- For each image found in the post
3.1 Find or create entry in import_image_table with old_url
3.2 Add the current post_id/import_image_id to import_image_use
4-For each entry in import_image_table (aka 15K entries)
4.1 Import the image,
4.2 set new_url
5- For each entry in import_image_use
5.1 get the post
5.2 find the <img> tag in the post
5.3 Replace the source with the new url
6. Clean up (drop the two tables).