Merge pull request #248 from tbak/2.x

2.x Eviction queue + EurekaRegistry refactoring
Removed rx from module names
Renaming package to com.netflix.eureka2
Merge pull request #249 from NiteshKant/2.x

Renaming artifact and package names
Fix issue with update notifications in the interest channel.
Diff.size == 0 causes NullPointerException.