Merge pull request #277 from AzureAD/dev

Dev
Update README.md

update for broker
add adal version to log
redirecturi handling for broker installer
Local cache usage needs to be fixed
revert back broker switch logic
add more logging and update tests
Merge pull request #288 from AzureAD/broker_fix

Broker fix
update pom files
Merge branch 'master' of github.com:AzureAD/azure-activedirectory-library-for-android
update redirecturi format for broker
Merge pull request #296 from AzureAD/fix_redirecturi

update redirecturi format for broker
v1.0.5
contributing file
Update README.md
update gradle instructions
update master fixes and prepare for release