Merge pull request #12 from nnegativ/master

new version of data-model library (support for text and enum types) and information about ag-player-mongodb
Restructure README after merge.
Version increase.
Merge pull request #13 from nnegativ/master

Only information about external very simpleCSV module
Fix content type for Solr 4.0-beta and further.
Prepare for next development cycle.
Introduce BulkJSONDataESSink to allow bulk indexing to ElasticSearch.
Allow to send bulk data in another thread instead of the same.
Avoid code duplication.