Ruby Snippet for String Spliting

I need a snippet of ruby code that will split an article into sentences (keeping punctuation intact). Example: String = "The dog ran fast! Why did the dog run? I am the dog. The dog said 'bark.' (also should work in paratheses.)" Should render an array of sentences: ["The dog ran fast!","Why did the dog run?","I am the dog.","The dog said 'bark.'","(also should work in paratheses.)"] Thanks! Need this ASAP! Should be fast and simple, $30? First person to post it working will get the job.