Merge pull request #56 from avoscloud/wp

release v1.1.1 for wp and unity.
[JENKINS] Android sdk version v2.6.2
Update changelog.txt
[JENKINS] Android sdk version v2.6.2
[JENKINS] Android sdk version v2.6.2
[JENKINS] iOS sdk version v2.6.2
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Update changelog.
Merge remote-tracking branch 'upstream/master' (reverted from commit 2f39efc94e696778858a5f28d0766e9c58261a22)
Merge branch 'master' into master-2
[JENKINS] iOS sdk version v2.6.2
Update changelog.
add custom avpush and receiver sample
Merge pull request #58 from lbt05/master

add custom avpush and receiver sample
Merge pull request #57 from ufosky/master

Update iOS changelog.
[JENKINS] iOS sdk version v2.6.2.1
Merge remote-tracking branch 'upstream/master'
Update changelog.
Merge pull request #59 from ufosky/master

Update iOS changelog.