Repo name

[elshize]

We should change the repo/project name to something more generic. The major objective is to run a big query benchmark but it's becoming more than that.

For instance, it could be used by anyone just to build collections, compress and such, and then work on that for, say, feature extraction. This is more or less my use case in query routing project. I will want to do all from prasing through indexing and wand data, but then I'll do some custom stuff. I will definitely reuse that and having something like that would help with reproducibility of any paper we publish in the future that is based on PISA codebase.

So, any suggestions?