small refactoring
enhancements in association mappings
test ENV['TRAVIS_BRANCH'] for gemfile
dump and load of a converter can now fill existing objects
changed yaoc branch in gem file
made new private and added a factory method
refactoring converter to object_mapper
changed readme
Merge pull request #1 from slowjack2k/feature/refactore_converter

refactore converter
existing records will be loaded using provided metadata
Merge pull request #2 from slowjack2k/feature/load_existing_records

existing records will be loaded using provided metadata
small changes for naming converters
 bump up version to 0.0.3
Merge pull request #3 from slowjack2k/develop

small enhancements