Path to cache.dat

[ehorohorin]

By default rss2twitter create cache,dat in the current working directory.
It should be defined by parameter, otherwise this error may appear:

ERROR, UNEXPECTED EXCEPTION
[Errno 13] Permission denied: 'cache.dat'
Traceback (most recent call last):
File "/home/genix/sources/rss2twitter-0.0.3/src/rss2twitter.py", line 109, in
main()
File "/home/genix/sources/rss2twitter-0.0.3/src/rss2twitter.py", line 69, in main
cPickle.dump({'id': None}, open('cache.dat', 'wb'), -1)
IOError: [Errno 13] Permission denied: 'cache.dat'