Rename snappy_tempdir to snappyTempdir

New name complies with Yii naming conventions.

Author: dmitrivereshchagin

README.md

@@ -33,7 +33,7 @@ following in configuration `components` section:
 Specifying paths to binaries is mandatory.  Optionally you can configure
 default command line arguments that can be overridden or adjusted later.
 It is also possible to set temporary directory for both components using
-`snappy_tempdir` application parameter.
+`snappyTempdir` application parameter.
 
 ## Usage
 

src/AbstractComponent.php

@@ -58,6 +58,6 @@ public function __call($name, $parameters)
      */
     protected function resolveTempdir()
     {
-        return $this->tempdir ?: Yii::app()->params['snappy_tempdir'];
+        return $this->tempdir ?: Yii::app()->getParams()->itemAt('snappyTempdir');
     }
 }