fuzzy-matching doesn't consider underscores

[faressoft]

fuzzy-matching doesn't consider underscores.

With PHP for example.
When we type arrayse it doesn't provide any suggestions ! It should provide at least array_search function.

[TimAEllis]

I believe fuzzy-matching doesn't work at all with this plugin. i.e. arrsrch should also work but it doesn't. I think #24 is a better issue because it is more of a general issue.

[jandor64]

Ditto to @Fudge0952 - this is a larger issue. I've submitted a pull request that I believe addresses it, any review would be appreciated. See pull request #40
Here's my local copy now: