Updated readme and sql test

Author: Westin Shafer

README.md

@@ -18,6 +18,7 @@ Same if you want different settings per entity/table, it should be done by a spe
     - [With simple SQL](#with-sql-applicator)
 - [Supported filters](#supported-filters)
     - [Equals](#equals---eq-)
+    - [Not Equals](#not-equals---neq-)
     - [Greater than](#greater-than---gt-)
     - [Greater than or Equals](#greater-than-or-equals---gte-)
     - [Lower than](#lower-than---lt-)
@@ -153,6 +154,11 @@ GET http://host/endpoint/?field=value
 ```
 _Both examples ☝ are equal_
 
+### Not Equals - NEQ (!=)
+```http request
+GET http://host/endpoint/?field[neq]=value
+```
+
 ### Greater Than - GT (>)
 ```http request
 GET http://host/endpoint/?field[gt]=value

tests/Service/FilterApplicatorTest.php

@@ -100,6 +100,13 @@ public function provideFilter(): array
                 'SELECT * FROM table WHERE public = 1 AND col = :col_eq',
                 ['col_eq' => 'val'],
             ],
+            'sql - neq' => [
+                $sqlApplicator,
+                [new FilterWithOperator('col', new Value('val'), '!=', 'neq')],
+                'SELECT * FROM table WHERE public != 1',
+                'SELECT * FROM table WHERE public != 1 AND col != :col_neq',
+                ['col_neq' => 'val'],
+            ],
             'sql - gt' => [
                 $sqlApplicator,
                 [new FilterWithOperator('col', new Value('val'), '>', 'gt')],