Added logo. Updated slides with work done.
Added logo from OpenClipart:
https://openclipart.org/detail/132133/magic-hat-and-wand-by-gnokii

Changed to org_a and org_b the name of the orgs for CKAN.
Completed the slides. Pending Santender sensores.
Merge branch 'publish' of github.com:Bitergia/fiware-chanchan into publish
Merge branch 'publish'