Using integer keys causes get/set to not work as expected

[okhwaja]

Hi,

I'm running into an issue when using a SET followed by a GET with integer keys. My productionredis-rb client handles this case.

[1] pry(main)> r = Redis.new;
[2] pry(main)> r.set(123, 'yo')
  Redis (3.30ms) SET 123 yo
=> "OK"
[3] pry(main)> r.get(123)
  Redis (0.65ms) GET 123
=> "yo"
[4] pry(main)> m = MockRedis.new;
[5] pry(main)> m.set(123, 'yo')
=> "OK"
[6] pry(main)> m.get(123)
=> nil

The key is converted into a string in the SET method, but not in the GET method

I'd be happy to submit a PR to change this behavior. Please let me know

[sds]

Thanks for the report, @okhwaja. Would love a pull request to make this consistent. Should be easy to add a test for, as well.

[sds]

Fixed in #158. Thanks!