create Model from JSON string
possibility to access Context from RoboModel subclass
RoboManager#last()
ensure fully prepared DB before operations
RoboModel#toJson()
Table name should be a member variable
improved tests
Cover the empty DB state scenarios - on SQLiteException prepare the tables and re-run given DB operation
renamed ModelHierarchyTestCase to ModelTestCase
test RoboModel#toJson()
Renamed test package to com.nonninz.robomodel to access package private methods
made RoboManager#dropDatabase() package private
Broken TestCases for @HasMany and @BelongsTo relationships
Merge pull request #2 from naru/master

Improvements galore!