- Added test for geo shape filter

- Added docs for geo shape filter

Author: babenkoivan

README.md

@@ -424,6 +424,7 @@ whereRegexp($field, $value, $flags = 'ALL') | whereRegexp('name.raw', 'A.+') | F
 whereGeoDistance($field, $value, $distance) | whereGeoDistance('location', [-70, 40], '1000m') | Filters records according to given point and distance from it. [Here](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-geo-distance-query.html) you can find more about syntax.
 whereGeoBoundingBox($field, array $value) | whereGeoBoundingBox('location', ['top_left' =>  [-74.1, 40.73], 'bottom_right' => [-71.12, 40.01]]) | Filters records within given boundings. [Here](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-geo-bounding-box-query.html) you can find more about syntax.
 whereGeoPolygon($field, array $points) | whereGeoPolygon('location', [[-70, 40],[-80, 30],[-90, 20]]) | Filters records within given polygon. [Here](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-geo-polygon-query.html) you can find more about syntax.
+whereGeoShape($field, array $shape) | whereGeoShape('shape', ['type' => 'circle', 'radius' => '1km', 'coordinates' => [4, 52]]) | Filters records within given shape. [Here](https://www.elastic.co/guide/en/elasticsearch/guide/current/querying-geo-shapes.html) you can find more about syntax.
 
 In most cases it's better to use raw fields to filter records, i.e. not analyzed fields.
 

tests/Builders/FilterBuilderTest.php

@@ -339,6 +339,37 @@ public function testWhereGeoPolygon()
         );
     }
 
+    public function testWhereGeoShape()
+    {
+        $shape = [
+            'type' => 'circle',
+            'radius' => '1km',
+            'coordinates' => [
+                4.89994,
+                52.37815
+            ]
+        ];
+
+        $builder = (new FilterBuilder($this->mockModel()))
+            ->whereGeoShape('foo', $shape);
+
+        $this->assertEquals(
+            [
+                'must' => [
+                    [
+                        'geo_shape' => [
+                            'foo' => [
+                                'shape' => $shape
+                            ]
+                        ]
+                    ]
+                ],
+                'must_not' => []
+            ],
+            $builder->wheres
+        );
+    }
+
     public function testOrderBy()
     {
         $builder = (new FilterBuilder($this->mockModel()))