Fixed @Accessors with non letter prefixes

After reviewing the lombok implementation the previous change missed some cases: Only
the prefixes '_' and '$' where handled, but all prefixes that end with a non letter
charater must be handled the same way.
Merge pull request #26 from uvpoblotzki/accessors_prefix_fix

Fixed @Accessors with non letter prefixes
Update README.md
switched to new version
DRY String.format
Fixed: @Delegate on a type parameter doesn't fail
added new test
Fixed: @Delegate on methods throwing exceptions
added test
added mock jdk for tests
added delombok action for @Delegate
fixed type parameter generation for delombok actions
fixed generic method delegation for @Delegate
cleanup code
prevent calling lombok augmentprovider on each psiTree change
prepare @delegate on methods
Merge branch 'better_delegate_support' into backport_intellij_10