Failed to handle redirect to download dynamodb_local

Current implementation does not cater for redirect, causing error when downloading dynamodb_local

```
/Users/anggra/Documents/Work/web/testing/node_modules/dynamodb-localhost/dynamodb/installer.js:23
throw new Error('Error getting DynamoDb local latest tar.gz location ' + response.headers.location + ': ' + response.statusCode);
^

Error: Error getting DynamoDb local latest tar.gz location http://103.1.138.149/s3-us-west-2.amazonaws.com/dynamodb-local/dynamodb_local_latest.tar.gz: 302
at ClientRequest. (/Users/anggra/Documents/Work/web/testing/node_modules/dynamodb-localhost/dynamodb/installer.js:23:23)
at Object.onceWrapper (events.js:291:19)
at emitOne (events.js:96:13)
at ClientRequest.emit (events.js:189:7)
at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:522:21)
at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)
at Socket.socketOnData (_http_client.js:411:20)
at emitOne (events.js:96:13)
at Socket.emit (events.js:189:7)
at readableAddChunk (_stream_readable.js:176:18)
at Socket.Readable.push (_stream_readable.js:134:10)
at TCP.onread (net.js:551:20)
```

I've created a fix at https://github.com/anggras/dynamodb-localhost/tree/handle-redirect
Please let me know if it is acceptable

Start in dynamodb/installer.js at the reported line and reproduce the dynamodb_local download to inspect the 302 response. Done means the redirect is handled and the archive downloads without the reported error; the issue also links an existing fix branch for comparison.

Written by the indexing model from the issue text.