[skip travis] renaming

to avoid using same folder when using pip install for example

youtube_dlc/postprocessor/execafterdownload.py

@@ -0,0 +1,31 @@
+from __future__ import unicode_literals
+
+import subprocess
+
+from .common import PostProcessor
+from ..compat import compat_shlex_quote
+from ..utils import (
+    encodeArgument,
+    PostProcessingError,
+)
+
+
+class ExecAfterDownloadPP(PostProcessor):
+    def __init__(self, downloader, exec_cmd):
+        super(ExecAfterDownloadPP, self).__init__(downloader)
+        self.exec_cmd = exec_cmd
+
+    def run(self, information):
+        cmd = self.exec_cmd
+        if '{}' not in cmd:
+            cmd += ' {}'
+
+        cmd = cmd.replace('{}', compat_shlex_quote(information['filepath']))
+
+        self._downloader.to_screen('[exec] Executing command: %s' % cmd)
+        retCode = subprocess.call(encodeArgument(cmd), shell=True)
+        if retCode != 0:
+            raise PostProcessingError(
+                'Command returned error code %d' % retCode)
+
+        return [], information