Added a tag before each log

To semplify the grep into the log (using tail -f
"/Users/`whoami`/Library/Logs/iOS Simulator/${VERSION}/system.log" |
grep "${TAG}"), an additional tag a parameter has been added
Update UIViewController+Swizzled.podspec
Revert "Update UIViewController+Swizzled.podspec"

This reverts commit 7c38a97a3069b0d70d85aa095e13b2ba37b3a780.
Removed warnings

Removed an unused function and fixed integer sign type into for loop
Example Skeleton first import
add example skeleton
fixed indentation problem (off by one bug :-()
Completed a simple example
Merge pull request #3 from gscalzo/master

Added a TAG parameter to prepend to each log line