Set empty string on superclass
Use regular expression for link detection
Regex stuff cleanup
Use more liberal regex from John Gruber to detect different schemas besides just web URLs
Add nil detection block condition
Add protocol detection
Change test case for valid URL
If a link doesn't have a protocol, register it as http
Add test for link with no protocol
Merge pull request #76 from wakachamo/master

Regex-based URL detection, UILabel superclass awareness