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diff --git a/vendor/ruflin/elastica/lib/Elastica/Util.php b/vendor/ruflin/elastica/lib/Elastica/Util.php
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+++ b/vendor/ruflin/elastica/lib/Elastica/Util.php
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+<?php
+namespace Elastica;
+
+/**
+ * Elastica tools.
+ *
+ * @author Nicolas Ruflin <spam@ruflin.com>
+ * @author Thibault Duplessis <thibault.duplessis@gmail.com>
+ * @author Oleg Zinchenko <olegz@default-value.com>
+ * @author Roberto Nygaard <roberto@nygaard.es>
+ */
+class Util
+{
+    /**
+     * Replace the following reserved words: AND OR NOT
+     * and
+     * escapes the following terms: + - && || ! ( ) { } [ ] ^ " ~ * ? : \.
+     *
+     * @link http://lucene.apache.org/java/2_4_0/queryparsersyntax.html#Boolean%20operators
+     * @link http://lucene.apache.org/java/2_4_0/queryparsersyntax.html#Escaping%20Special%20Characters
+     *
+     * @param string $term Query term to replace and escape
+     *
+     * @return string Replaced and escaped query term
+     */
+    public static function replaceBooleanWordsAndEscapeTerm($term)
+    {
+        $result = $term;
+        $result = self::replaceBooleanWords($result);
+        $result = self::escapeTerm($result);
+
+        return $result;
+    }
+
+    /**
+     * Escapes the following terms (because part of the query language)
+     * + - && || ! ( ) { } [ ] ^ " ~ * ? : \ < >.
+     *
+     * @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html#_reserved_characters
+     *
+     * @param string $term Query term to escape
+     *
+     * @return string Escaped query term
+     */
+    public static function escapeTerm($term)
+    {
+        $result = $term;
+        // \ escaping has to be first, otherwise escaped later once again
+        $chars = array('\\', '+', '-', '&&', '||', '!', '(', ')', '{', '}', '[', ']', '^', '"', '~', '*', '?', ':', '/', '<', '>');
+
+        foreach ($chars as $char) {
+            $result = str_replace($char, '\\'.$char, $result);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Replace the following reserved words (because part of the query language)
+     * AND OR NOT.
+     *
+     * @link http://lucene.apache.org/java/2_4_0/queryparsersyntax.html#Boolean%20operators
+     *
+     * @param string $term Query term to replace
+     *
+     * @return string Replaced query term
+     */
+    public static function replaceBooleanWords($term)
+    {
+        $replacementMap = array(' AND ' => ' && ', ' OR ' => ' || ', ' NOT ' => ' !');
+        $result = strtr($term, $replacementMap);
+
+        return $result;
+    }
+
+    /**
+     * Converts a snake_case string to CamelCase.
+     *
+     * For example: hello_world to HelloWorld
+     *
+     * @param string $string snake_case string
+     *
+     * @return string CamelCase string
+     */
+    public static function toCamelCase($string)
+    {
+        return str_replace(' ', '', ucwords(str_replace('_', ' ', $string)));
+    }
+
+    /**
+     * Converts a CamelCase string to snake_case.
+     *
+     * For Example HelloWorld to hello_world
+     *
+     * @param string $string CamelCase String to Convert
+     *
+     * @return string SnakeCase string
+     */
+    public static function toSnakeCase($string)
+    {
+        $string = preg_replace('/([A-Z])/', '_$1', $string);
+
+        return strtolower(substr($string, 1));
+    }
+
+    /**
+     * Converts given time to format: 1995-12-31T23:59:59Z.
+     *
+     * This is the lucene date format
+     *
+     * @param int $date Date input (could be string etc.) -> must be supported by strtotime
+     *
+     * @return string Converted date string
+     */
+    public static function convertDate($date)
+    {
+        if (is_int($date)) {
+            $timestamp = $date;
+        } else {
+            $timestamp = strtotime($date);
+        }
+        $string = date('Y-m-d\TH:i:s\Z', $timestamp);
+
+        return $string;
+    }
+
+    /**
+     * Convert a \DateTime object to format: 1995-12-31T23:59:59Z+02:00.
+     *
+     * Converts it to the lucene format, including the appropriate TimeZone
+     *
+     * @param \DateTime $dateTime
+     * @param bool      $includeTimezone
+     *
+     * @return string
+     */
+    public static function convertDateTimeObject(\DateTime $dateTime, $includeTimezone = true)
+    {
+        $formatString = 'Y-m-d\TH:i:s'.($includeTimezone === true ? 'P' : '\Z');
+        $string = $dateTime->format($formatString);
+
+        return $string;
+    }
+
+    /**
+     * Tries to guess the name of the param, based on its class
+     * Example: \Elastica\Filter\HasChildFilter => has_child.
+     *
+     * @param string|object Class or Class name
+     *
+     * @return string parameter name
+     */
+    public static function getParamName($class)
+    {
+        if (is_object($class)) {
+            $class = get_class($class);
+        }
+
+        $parts = explode('\\', $class);
+        $last = array_pop($parts);
+        $last = preg_replace('/(Facet|Query|Filter)$/', '', $last);
+        $name = self::toSnakeCase($last);
+
+        return $name;
+    }
+
+    /**
+     * Converts Request to Curl console command.
+     *
+     * @param Request $request
+     *
+     * @return string
+     */
+    public static function convertRequestToCurlCommand(Request $request)
+    {
+        $message = 'curl -X'.strtoupper($request->getMethod()).' ';
+        $message .= '\'http://'.$request->getConnection()->getHost().':'.$request->getConnection()->getPort().'/';
+        $message .= $request->getPath();
+
+        $query = $request->getQuery();
+        if (!empty($query)) {
+            $message .= '?'.http_build_query($query);
+        }
+
+        $message .= '\'';
+
+        $data = $request->getData();
+        if (!empty($data)) {
+            $message .= ' -d \''.JSON::stringify($data).'\'';
+        }
+
+        return $message;
+    }
+}