Consitent Read Included in find

[prasathsarath]

This is for the specific issue #38
Also I couldn't find any doc/page related to contribution to repo, would be great if someone share them
Signed-off-by: sarathprasath prasath5s@live.com

[awood45]

Fair point on the contributing guide, I'll look at writing one up.

As for this change, there are a few problems that prevent me from being able to take it:

1. It's a breaking change - as mentioned in the issue, attributes called :consistent_read (which is pretty plausible) would break. This can be worked around, but users would see non-intuitive errors.
2. This particular diff is broken, and unit tests would show this. :consistent_read would appear in both the key (which would be an error), and in the pass-through attribute you provide. This would likely lead to breakage as the code above isn't hardened against this.
3. Any solution needs to account for the other #get_item parameters that users may want to pass through to the call. The solution would probably be a method called #find_with_options or similar that has a different signature.

I appreciate the PR and will take this as a big +1 on prioritizing this feature. Thanks!