iconara/cql-rb — pull request #32 by leobessa (2013-08-02 18:08:07+00:00)
Title: Fixed Decoding.read_long! for negative values

This commit handles the decoding of negative long values.

```ruby
describe '#read_long!' do
it 'decodes a negative long' do
buffer = ByteBuffer.new("\xff\xff\xff\xff\xff\xff\xff\xff")
Decoding.read_long!(buffer).should == -1
end
end
```