Merge pull request #1 from liuxingkf/master

Adding slides for inference: introduction to GIST, preliminary results
Moving the paper.

The paper is moved to the probkb project.
Finishing final presentation.

The final presentation slides are updated. New results for grounding
after pruning and GIST inference is included.
Initializing poster

Added the poster template from http://www.brian-amberg.de/uni/poster to
this repository.
Updating poster first version