alsa-gobject: bump version up to 0.1.0 for official release

alsa-project/alsa-gobject pull request #46 was opened from takaswie:

This patch is a preparation for official v0.1.0 release. After merged, I'm going to push a tag 'v0.1.0' with release note.

Request URL : https://github.com/alsa-project/alsa-gobject/pull/46 Patch URL : https://github.com/alsa-project/alsa-gobject/pull/46.patch Repository URL: https://github.com/alsa-project/alsa-gobject