hello app for sample
clear token
clear cookies
update comment for review
Merge pull request #46 from MSOpenTech/dev_simple_hello

Dev simple hello
remove javascript interface to prevent remote code exec
Merge pull request #50 from MSOpenTech/dev_remote_execute

Disable any features in web view that allow remote code execution
update travis for coverall
Merge branch 'dev' of github.com:MSOpenTech/azure-activedirectory-library-for-android into dev
update travis.yml to post coverage report
update sample constants
merge from dev
update for review comment