Merge pull request #1 from masakisueda/master

Add: enable to select overwrite or not sprite images
Add a Bitdeli badge to README
Merge pull request #2 from bitdeli-chef/master

Add a Bitdeli Badge to README
Update: beezlib version to ~0.9.1.
release: 0.8.2
Fix: removed unnecessary implements because of beezlib update
Merge pull request #3 from CyberAgent/update-for-beezlib

Fix: removed unnecessary implements because of beezlib update
Add: Add a reference function of the mock data in the GUI
Update README.md
Add: image
Fix: small fix
release: 0.8.3
Add: socket server