widont: Add failing tests for short texts
widont: Pass failing tests for short texts

This perhaps isn't as good of a solution as it could be since it doesn't tie
into the existing regexp, but it is simple and doesn't trample on any of the
other tests.  It also allows me to provide awareness of the problem and provide
a proposed solution, without investing too much time in trying to modify the
regexp.
Leverage the regexp to handle word count

This will also handle strings like "<h1>One Two</h1><p>Three Four Five</p>" or
html tags with spaces in them for attributes.
Don't count inline tags as words

Thus, for "<h1>Foo <a href='#'>bar baz</a></h1>", the h1 tag has for the
purposes of the matching regexp three words.
Merge pull request #18 from mattly/widont-short-headlines

Widont short headlines