Rename files.

Signed-off-by: HIRANO Takahito <hiranotaka@zng.info>
Add the handle and event methods to Channel interface.

Signed-off-by: HIRANO Takahito <hiranotaka@zng.info>
Upgrade Twitter API to 1.1.

Signed-off-by: HIRANO Takahito <hiranotaka@zng.info>