Add support for Python 3.3+. Note that the wrappers for MeCab is not working yet due to the lack of the Python 3 compatability in the underlying MeCab-python wrapper.
Use sys.version_info[0] instead of sys.version_info.major for Python 2.6 compatibility (suggested by combacsa).
Merge pull request #17 from hyeshik/master

Add Python 3 compatibility.