Bulk Indexor background error handling, refs #14
Example doc and unit tests for bulk errors
Merge pull request #19 from araddon/bulk_errors

Bulk Indexor background error handling, refs #14
Update README.md

Adding Aaron, who has been extremely helpful.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	core/bulk.go
	core/bulk_test.go
	core/example_test.go
	core/search_test.go