completed functionality and docs update

src/SearchableAgreement.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Glmdev\Search;
+
+trait SearchableAgreement {
+    
+    /**
+     * returns the searchable fields from the protected $searchable array
+     * 
+     * @return array
+     */
+    public static function getSearchable(){
+        $inst = new self();
+        return $inst->searchable;
+    }
+    
+    /**
+     * searches the model for the query and returns the results
+     * 
+     * @param string $query
+     * 
+     * @return \Illuminate\Support\Collection
+     */
+    public static function search( $query ){
+        return \Search::search( self::class, $query );
+    }
+    
+}