added_operator_to_where_function (#17)

* added_operator_to_where_function

* Enhancements to match laravel where

* Updated readme

Author: albalooshi

README.md

@@ -71,8 +71,12 @@ Airtable::find('id_string');
 ```
 
 #### Filter records
+- First argument is the column name
+- Second argument is the operator or the value if you want to use equal '=' as an operator.
+- Third argument is the value of the filter
 ``` php
-Airtable::where('name', 'myName')->get();
+Airtable::where('id', '5')->get();
+Airtable::where('id', '>', '5')->get();
 ```
 
 #### First or Create

src/Airtable.php

@@ -48,9 +48,13 @@ public function table($table)
         return $this;
     }
 
-    public function where($column, $value)
+    public function where($column, $operator, $value = null)
     {
-        return $this->api->addFilter($column, '=', $value);
+        if (is_null($value)) {
+            return $this->api->addFilter($column, '=', $operator);
+        } else {
+            return $this->api->addFilter($column, $operator, $value);
+        }
     }
 
     public function firstOrCreate(array $idData, array $createData = [])