Using travis.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Exclude directories of dependent packages.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Specify python version in travis.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Fixed specify python version in travis.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Merge pull request #2 from mkouhei/test_travis

using travis-ci