Small CR fixes

Author: AmitBu

README.md

@@ -20,6 +20,7 @@ require_once __DIR__ . '/vendor/autoload.php';
 use SecureNative\sdk\SecureNative;
 use SecureNative\sdk\SecureNativeOptions;
 use SecureNative\sdk\EventTypes;
+use SecureNative\sdk\SecureNativeContext;
 ```
 
 #### Initializing SDK

src/Models/EventOptions.php

@@ -61,7 +61,7 @@ private function set($data){
 
 
         if (count($data[self::EVENT_PROPERTIES]) > self::MAX_EVENT_PROPERTIES_COUNT) {
-            throw new Exception('You can only set up to '+ self::MAX_EVENT_PROPERTIES_COUNT +' custom properties');
+            throw new \Exception('You can only set up to ' . self::MAX_EVENT_PROPERTIES_COUNT . ' custom properties');
         }
 
         $this->properties = isset($data[self::EVENT_PROPERTIES]) ? $data[self::EVENT_PROPERTIES] : null;