rename to create/drop_database from create/drop_table
add drop_index/vacuum_index/invoke methods
fix
install tool for MacOSX
return None object when TYPE_NULL
ignore all *.pyc files
start travis-ci
migrate invoke.py from Makefile (in progress)
add more testcase
add travis-ci build status badge
fix build process
update build process for Linux env
update build process for Linux env
update build process for Linux env
Merge pull request #2 from hhatto/update_libotama_ver0.7.2

Update for otama ver0.7.2