Rename AnnotationLdpMapper to LdpToOaMapper
Merge pull request #55 from sul-dlss/ldp-oa-mapper

Rename AnnotationLdpMapper to LdpToOaMapper
implement LdpCreator.subject_statements method for searching graph
implement recursion of blank nodes in LdpCreator.subject_statements
implement LdpCreator.targets_graph but no test yet for multiple targets
refactor LdpCreator.subject specs
fix recursion of blank nodes in LdpCreator.subject_statements
all but mult target specs for LdpCreator.targets_graph
implement test for LdpCreator.targets_graph when multiple subject
implement LdpCreator.bodies_graph
add .pry_history to .gitignore
implement LdpCreator.createDirectContainer
make graph parsing class level methods in LdpCreator service instead of instance methods
add missing vcr cassettes
refactored: removed create_container in favor of create_direct_container
fix wrong relationship in create_target_container and a couple other things
implement LdpCreator.create_base method using graph to replace old instance #create method using hardcoded ttl
revise specs for create_body_container and create_target_container and switch to content-tyep of application/x-turtle