Overlap time for JDBC river column strategy
Merge pull request #280 from wjaworski/master

Overlap time for JDBC river column strategy
fix doc for ignore_null_values
reformatting source code
dropping empty maps, especially after null value removal
delete example script
Merge to the latest commits
Merge branch 'master' of https://github.com/jprante/elasticsearch-river-jdbc

Conflicts:
	src/main/java/org/xbib/elasticsearch/river/jdbc/strategy/column/ColumnRiverFeeder.java
	src/main/java/org/xbib/elasticsearch/river/jdbc/strategy/simple/SimpleRiverSource.java