Added "wrap" function:
"Wrap" will find the first blank line before and after a selection and use this range as a paragraph to wrap. The paragraph is split into words (space delimited) and the length of each word is used to make sure that a single line will not exceed the print margin (ruler) width. If a single word exceeds that width, the word is split.
Merge pull request #232 from AMiniLegend/wrap

Added "wrap" functionality as in Sublime.