S08E06_IgorAndroidServices:   added lines to gradle build.

 into android chain:
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_7
         targetCompatibility JavaVersion.VERSION_1_7
     }

 into dependencies chain:
    compile 'net.orfjackal.retrolambda:retrolambda:1.7.0'
    compile 'org.roboguice:roboguice:3.0b-experimental'

app now seems to run, need to trace program to understand it better by adding Log.d statements