Clean up code formatting in Applications
Fix naming in InstanceRegistry to be CheckStyles compliant
Make InstanceRegistry locks final
Convert for loops to foreach loops in InstanceRegistry
Remove redundant checks for null in InstanceRegistry
Fix formatting and CheckStyles naming in EurekaBootStrap
Remove redundant continue in loop
Clean up if block and add JavaDoc in DiscoveryClient
Merge pull request #117 from Knewton/registrycleanup

CheckStyles/code cleanup and JavaDoc