Switch to PSR-4, fix CS and update service provider

src/Matchers/LevenshteinMatcher.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace TomLingham\Searchy\Matchers;
+
+/**
+ * Matches strings for Acronym 'like' matches but does NOT return Studly Case Matches.
+ *
+ * for example, a search for 'fb' would match; 'foo bar' or 'Fred Brown' but not 'FreeBeer'.
+ *
+ * Class AcronymMatcher
+ */
+class LevenshteinMatcher extends BaseMatcher
+{
+    /**
+     * @param $column
+     * @param $searchString
+     *
+     * @return mixed|string
+     */
+    public function buildQueryString($column, $searchString)
+    {
+        return "levenshtein($column, '$searchString')";
+    }
+}