Allow loading of redis dumps with binary data.

If the redis dump contains binary data (e.g. serialized data) that
appears to be invalid UTF8 to the YAJL parser, it will not load.
(https://github.com/delano/redis-dump/issues/7). I've added a "-n"
flag that will tell YAJL to ignore "bad utf8" in the case where the
user knows that their data is binary in nature.
whitespace
Move from Yajl to Oj
Remove option that no longer makes sense without Yajl
redis-dump -> 0.3.3 (switch from Yajl to Oj)
Merge pull request #2 from meekmichael/oj_for_breakfast

Oj for breakfast -- switch to using Oj instead of Yajl