change version number.
add twitter and github link. (0.0.10).
Merge branches 'master' and 'release-0.0.10' into develop
change image to 2x resolution.
Merge branch 'icon-high-resolution' into develop
change version number.
copy css sprite file and animated gif file only.
high resolution images. (0.0.10.1)

change css image to high resolution image.
store material images.
Merge branches 'release-0.0.10.1' and 'master' into develop