Merge pull request #59 from ufosky/master

Update iOS changelog.
release v1.1.2.
fix change log formate error.
Merge pull request #61 from avoscloud/unity

Unity
[JENKINS] Android sdk version v2.6.3
Update changelog.txt
[JENKINS] iOS sdk version v2.6.3
Merge remote-tracking branch 'upstream/master'
Update iOS changelog.