add couchbase-lite-java-core submodule
point to latest commit on new_master in java-core submodule
update .gitignore
convert to use new dependency and java gradle plugin
add gradlew
remove android assets no longer needed
use new maven artifact
use testCompile instead of instrumentTestCompile
build via maven artifact
repoint submodule for rename couchbase-lite-android-core -> couchbase-lite-java-core
update to latest commit on couchbase-lite-java-core master branch