made the links be attached to the span rather than the whole h1
upon removing the start button, we append the link to repo
added styling to repo link href
added a link to my projects portfolio and to email me
improved user experience

* edited form validation
* fixed screen resizing calculations to consider window width
* added link to a youtube video of the algorithm
Merge pull request #3 from cpkenn09y/link-to-repo

Link to repo