Updated to circleci (#31)

circleci config.yml updated

gradle.properties

@@ -10,6 +10,7 @@ org.gradle.jvmargs=-Xmx1536m
 android.useAndroidX=true
 android.enableJetifier=true
 kotlin.code.style=official
+org.gradle.caching=true
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects