Add :offset option to fuzzy find method.

[rickbutton]

It is often required to paginate the results of a search, but
fuzzily doesn't support an offset. An offset parameter was added that
is very similar to the limit parameter, and relies on the ActiveRecord
offset facility.

[coveralls]

Coverage remained the same when pulling e68dfe0 on rickbutton:search-offset into 4bc7dce on mezis:master.

[mezis]

Fab, thanks. I'll merge as soon as the Travis build passes, and release an update probably early next week.

[mezis]

Ah, it doesn't work with ActiveRecord 2.3 according to Travis. The simplest is probably to add an offset named scope to Fuzzily::Searchable::Rails2ClassMethods. Would you mind?

[mezis]

(also, you're welcome to mention yourself at the bottom of the README!)

[coveralls]

Coverage remained the same when pulling 2d2b621 on rickbutton:search-offset into 4bc7dce on mezis:master.

[rickbutton]

Ignore that last commit, worked on my box, not on Travis, looking into it

[coveralls]

Coverage remained the same when pulling 1d22e08 on rickbutton:search-offset into 4bc7dce on mezis:master.

[coveralls]

Coverage remained the same when pulling 1d22e08 on rickbutton:search-offset into 4bc7dce on mezis:master.

[coveralls]

Coverage remained the same when pulling 5fb73c1 on rickbutton:search-offset into 4bc7dce on mezis:master.

[rickbutton]

@mezis after lots of fiddling, it passed, so looks like the 2.3 bug is fixed.

[coveralls]

Coverage remained the same when pulling 48f7529 on rickbutton:search-offset into 4bc7dce on mezis:master.

[mezis]

Nice. I'll merge, do a tiny bit of refactoring, and release.
Thanks again for the contribution! 😸