Add transaction test for Bookmark.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Fixed uploading status to coveralls.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Fixed not install require packages.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Switched to python-coveralls.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Merge pull request #15 from mkouhei/fix_coveralls

Fixed fail of submitting coveralls.