Revise morphing of Sigel data

- Morph dump of Sigel data first
- Load and morph updates of Sigel data from June 2013 until now
using OAI-PMH-Opener
- Let all data flow together with dbs and morph everything
Update README.textile and location of data in project
Add method to process sample data for tests
Merge pull request #19 from SBRitter/sigel-data

Sigel data transformation with dump and updates