Added support for nested content. Caches 100 books in 3:30, reloads from cache in :03
Using class property for documents folder in GoodReader, cleaned up some diagnostics in Marvin
Restored diagnostic for ios_reset_connection
Added support for loading development_overlay from file specified in JSON. Changed 'developer_mode' to 'development_mode'
Track relocated books in GoodReader folder structure
Cleaned up format_map handling, improved diagnostics
Merge branch 'develop'

Conflicts:
	__init__.py
GoodReader support included in master.
Updates to README describing calibre-unaware apps, JSON development switches.