Update gruntfile.js and package.json

- Add grunt-robots-txt task and devDependency
- Add grunt-humans-txt task and devDependency
- Add new data to package.json for humans.tx and robots.txt files
- Change all devDependencies to "latest"
Update LICENSE
Begin initial IE8-11 support

By using html5shiv, the HTML5 elements (like main, section, article,
etc.) are now successfully supported in IE8-9. I am still having issues
with flexbox in IE11, but not in any other browser.

Font-files are also not loading despite the fact that I am using every
format "supported" by IE. I am not worrying about that issue however and
have set the fallback typeface as Arial.

For some odd reason, IE8-11 has also decided to deactivate most of the
JS scripts on my website. Development tools for IE are very unintuitive
and I am unable to discover which script is causing the issue.

Ultimately, I have again concluded that Internet Explorer is a hopeless
cause.
Add hyphenation plugin
Update bower.json with packages for IE support
Add IE support packages to gruntfile.js