Storage Client Library v0.2.0

Changes in v0.2:

• Added sample projects for getting started with the library.
• Removed blob_continuation_token typedef (use continuation_token instead).
• Renamed table_entity_property class to entity_property.
• Renamed entity_property_type enum to edm_type.
• Renamed query_payload_format enum to table_payload_format.
• Minor bug fixes and performance improvements.