proof reading
Merge pull request #67 from infoforcefeed/chore/proofreading

proof reading
Merge remote-tracking branch 'origin/master' into feature/prefix_matching
Merge branch 'feature/prefix_matching' of github.com:infoforcefeed/OlegDB into feature/prefix_matching
Merge branch 'feature/prefix_matching' of github.com:infoforcefeed/OlegDB into feature/prefix_matching
Final ol_prefix_match improvements.

- ol_prefix_match now returns a) the number of matched keys and b) fills
  out the passed in data parameter as a list of values. All of that shit
  needs to be freed when you're done with it.