Merge pull request #78 from lupatellimatteo/0.8.2

pull request from repository lupatellimatteo
Merge pull request #79 from baasbox/0.8.2

align master to 0.8.2
documentation on android social login
Merge pull request #80 from baasbox/master

pull from repository docs
Merge pull request #13 from baasbox/0.8.2

pull from repository docs
Merge pull request #14 from lupatellimatteo/0.8.2

align master to 0.8.2