Adding addAll method to the Cells object
Merging with develop branch
improved support for mixed case column family names, fixed #6
Merge branch 'develop' of github.com:Stratio/stratio-deep into develop

# By rcrespodelosreyes (3) and Óscar Puertas (1)
# Via Óscar Puertas
* 'develop' of github.com:Stratio/stratio-deep:
  Adding addAll method to the Cells object
  fixed merge error
  cell refactor
  cell refactor
Merge branch 'develop' into deep-refactor-different

* develop:
  improved support for mixed case column family names, fixed #6
  Adding addAll method to the Cells object

* renamed deep-core to deep-core-cassandra
* fixed ScalaCassandraEntityRDDTest