added missing HashTable and Log
android-maven-plugin version 3.8.0 in order to have a working build
Merge pull request #81 from simoarpe/master

added missing HashTable and Log - android-maven-plugin 3.8.0
Merge pull request #91 from danielkutik/gradle-appcompat-wip

Updated Build Tools to 19.0.1
Promoting alpha (gradle based project) to master