Added ability to specify link titles to inline and reference links.
Fixed whitespace bug with reference link regex.
Updated tests.
improve readme
Merge pull request #47 from malorisdead/link-titles

Add ability to specify link titles on inline and reference links.
Fix HTML Bug

If you add markdown after HTML on the same line, all the remaining markdown will not be parsed.

Demo:
Add "<span></span> *test*" without quotes to the top of a markdown page on it's own line and then parse.
Merge pull request #48 from kaamaru/master

Fix HTML Bug
post-increment operators should not be separated
span elements should get parsed on a first-come, first-served basis
separate compiling of link / image

there are 2 types of input that produce link / image
improve parsing of emphasis

**strong** and *em* and **strong** and *em*
implement link titles
improve tests
implement automatic line breaks as an option
add hhvm to PHP versions to test against