Add info about supported field types (Annotation Processor)

[artem-zinnatullin]

http://stackoverflow.com/questions/32259956/what-are-the-various-column-types-you-can-have-in-storio

[artem-zinnatullin]

BTW, there is now an entity in sample app that uses all types of fields supported by SQLite Annotation Processor https://github.com/pushtorefresh/storio/blob/master/storio-sample-app/src/main/java/com/pushtorefresh/storio/sample/db/entities/AllSupportedTypes.java