revise error message when missing SW format value
add gemnasium badge to readme and update jruby version in install steps
remove ruby-debug19 line from Gemfile
update stanford-mods gem to version 0.0.25
allow class level access to Logger (for RecordMerger)
add merge_policy logic to index_item
use fake druid variable in error message tests for merge policy for items
move merge policy logging back to indexer where it belongs and don't have a class var logger for Indexer
get item merge specs passing
remove 'when_possible' merge policy tests and tweak log messages and logic a bit
add merge fallback behavior for collection records and tests