Added support for inserting an array of dictionaries into a table.
Replaced -[FMDatabase insertInto:dictionaries:error:] with just -[FMDatabase insertInto:row:error:]

Inserting multiple dictionaries didn't actually perform a batch update, which might be confusing when comparing with other update methods. Also, there was no way to get the IDs of the inserted rows.

It seems like a more supportable approach to have users perform the loop + save point themselves.
Added helpers for inserting, selecting, updating, and deleting rows that match a dictionary of values.

These construct the WHERE clause automatically for the common case in which the clause only contains ANDs and equality comparisons.
Bumped version to 0.0.5