* [DOC] Added README file.
The IHierarchy is drawn in the Web interface again. Yay!

* [INODE,SC] Documentation added, variables renamed for consistency, exported often used method to the PGC.
* [IOTW,DEB] Added more debugging messages with useful statistics.
* [IOTW,SC] Simplified the materialization call (see changes in PGC).
* [IOTW_IIMB,SC] Renamed and relocated.