First non-working draft of Elasticsearch integration.
Compiling, not working yet. Added modular persistence of files. Need to add some tests now (Should have done it a lot before).
Solved remaining issues with ElasticSearch implementation and cleaned up a bit the mapping mechanism.
Updated the readme file.
Added elasticsearch's data folder to the .gitignore file.
Merge pull request #2 from zepag/master

Elasticsearch integration, and separation of Raw files and metadata/users persistence