Error messages are inconsistent

[dualcyclone]

EDIT: I initially assumed the issue was with getItem and setItem; but I noticed the message responses for remove respond with a message, and not an error object as per the README.

Original issue below:

getItem and setItem have inconsistent error responses given the other methods.

Eg: in the remove method, if the reference is null, the error response maps as follows:

pluginResult = [CDVPluginResult resultWithStatus: CDVCommandStatus_ERROR messageAsString:@"Reference was null"];

However, in both of the methods suggested, the error response is:

pluginResult = [CDVPluginResult resultWithStatus: CDVCommandStatus_ERROR messageAsInt:3]; //Reference was null