Merge pull request #69 from leancloud/unity

release unity 1.1.4.
[JENKINS] jschat sdk version v${RELEASE_BRANCH}
[JENKINS] jschat sdk version v1.0.2
[JENKINS] jschat sdk version v1.0.3
[JENKINS] Android sdk version v2.6.8
Update changelog.txt
Update changelog.txt
Update changelog.txt
Update changelog.txt
[JENKINS] iOS sdk version v2.6.8
Merge remote-tracking branch 'upstream/master'
Update iOS changelog.
Merge pull request #73 from ufosky/master

Update iOS changelog.
Update changelog.txt
Update changelog.txt

Reverse order.
[JENKINS] iOS sdk version v2.6.8.1
wp v1.2.3 sdk release.
[JENKINS] Android sdk version v2.6.8.1
Update changelog.txt
Merge pull request #75 from leancloud/wp

wp v1.2.3 sdk release.