Clean JNI on new core
Merge pull request #467 from realm/ez-clean-on-new-core

Clean JNI on new core
Update README.txt
Update the README file
Fix typo
Don’t send notifications to dead threads

Also don’t let the looper thread die and log exceptions.
Android seems to have the bad habit of trowing anonymous
runtime exceptions :-S
Merge pull request #481 from realm/ez-notify-dead

Don’t send notifications to dead threads
Merge branch 'master' of github.com:realm/realm-java into kg-link-query