New items added:

• Image retrieval example gallery.
• Image retrieval top 5 results.
• Image retrieval - img2img - show uploaded images
• Disclaimer added.

There is a bug needed to be resolve in next pull request. The bug is in text to image retrieval (and perhaps image to image retrieval as well): when click to second retrieval result, it will automatically used the input from select box, instead of what you have just typed in.