Install Quick Image Uploader plugin to CKEditor

Unpack archived files directly to ckeditor/plugins.
Turn on the plugin in ckeditor/config.js:
```
config.extraPlugins = 'jsplus_image';
```
Add these buttons to the toolbar definition:
- jsplus_image
See sample CKEditor toolbar configuration to find out more about this step.
PHP: Configure CKEditor to work with uploader:
```
config.jsplus_uploader_url = '/url/of/ckeditor/plugins/doksoft_uploader/uploader.php';
```
Optionally change upload directory and URL to it using variables $config['BaseDir'] and $config['BaseUrl'] in ckeditor/plugins/jsplus_upload/config.php
Now you can use your installed plugins. Do not forget to sure that browser cache was cleared.