Updated tags version.

Author: InFog

tests/Acceptance/AcceptanceTestCase.php

@@ -122,7 +122,7 @@ protected function assertTagsFileHeaderIsCorrect()
             "!_TAG_PROGRAM_AUTHOR\ttechlivezheng\t/[email protected]/",
             "!_TAG_PROGRAM_NAME\tphpctags\t//",
             "!_TAG_PROGRAM_URL\thttps://github.com/techlivezheng/phpctags\t/official site/",
-            "!_TAG_PROGRAM_VERSION\t0.6.1\t//",
+            "!_TAG_PROGRAM_VERSION\t0.8.1\t//",
         );
 
         $realHeader = array_splice($this->tagsFileContent, 0, count($expectedHeader));