Suppress warnings of "warning: private attribute?"

Example:

    $VERBOSE = true
Add specs for wrapped logger delegates block argument
Fix for logger delegates block argument
Merge pull request #1 from kachick/improve/suppress_warnings

Suppress warnings of "warning: private attribute?"
Merge pull request #2 from kachick/fix/delegates_block_compatible-Ruby-1.8.7

Delegates block argument to Logger
v0.0.2