Update Writer folder structure to match Reader new structure

src/Spout/Writer/WriterInterface.php

@@ -14,7 +14,7 @@ interface WriterInterface
      * By using this method, the data will be written to a file.
      *
      * @param  string $outputFilePath Path of the output file that will contain the data
-     * @return \Box\Spout\Writer\WriterInterface
+     * @return WriterInterface
      * @throws \Box\Spout\Common\Exception\IOException If the writer cannot be opened or if the given path is not writable
      */
     public function openToFile($outputFilePath);
@@ -24,7 +24,7 @@ interface WriterInterface
      * By using this method, the data will be outputted directly to the browser.
      *
      * @param  string $outputFileName Name of the output file that will contain the data. If a path is passed in, only the file name will be kept
-     * @return \Box\Spout\Writer\WriterInterface
+     * @return WriterInterface
      * @throws \Box\Spout\Common\Exception\IOException If the writer cannot be opened
      */
     public function openToBrowser($outputFileName);
@@ -34,7 +34,7 @@ interface WriterInterface
      *
      * @param  array $dataRow Array containing data to be streamed.
      *          Example $dataRow = ['data1', 1234, null, '', 'data5'];
-     * @return \Box\Spout\Writer\WriterInterface
+     * @return WriterInterface
      * @throws \Box\Spout\Writer\Exception\WriterNotOpenedException If the writer has not been opened yetthe writer
      * @throws \Box\Spout\Common\Exception\IOException If unable to write data
      */
@@ -48,7 +48,7 @@ interface WriterInterface
      *              ['data11', 12, , '', 'data13'],
      *              ['data21', 'data22', null],
      *          ];
-     * @return \Box\Spout\Writer\WriterInterface
+     * @return WriterInterface
      * @throws \Box\Spout\Common\Exception\InvalidArgumentException If the input param is not valid
      * @throws \Box\Spout\Writer\Exception\WriterNotOpenedException If the writer has not been opened yet
      * @throws \Box\Spout\Common\Exception\IOException If unable to write data