CMDQueryStringSerialization causing SimpleAuth to choke on iOS6

[kimballfrank]

Lines 72-74 of CMDQueryStringSerialization.m:

- (NSString *)cmd_stringByRemovingEscapes {
    return [self stringByRemovingPercentEncoding];
}

[self stringByRemovingPercentEncoding] is iOS7 and above.
[self stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] is the functional equivalent and is backward compatible with iOS6.

[calebd]

Wow I did not know that. Will update. Thanks!

[calebd]

Fixed in 521e3b7.