port should be string for concatenation
Change image transfer method to using nc and little refctoring
Change is_file to exists.Because some distributions have /etc/redhat-release as a symbolic link.
Added more ".gitignore" for OSX
Formatted PEP8
http://www.python.org/dev/peps/pep-0008/
Merge pull request #40 from Tacahilo/format-pep8

PEP8の規約に従ってコードの整形をしました