Fixed templates directory not installed when 'pip install repository'

Added package_data option to setup setup() function.

pip install -e option is just linking project path to python package
directory, so without package_data option, installing with -e option
will work as python will find templates directory from project path.
But without -e option, it can't find templates directory because it
doesn't copied to packages directory.

sorry for poor english.
Merge pull request #1 from kiwiple-pitaya/master

Fixed templates directory not installed when 'pip install repository'