Update README.md to replace Almond w/ AMDClean under 'What libraries hav...

...e you included?'

Was referred to take a look at this boilerplate by a colleague. After reading the README I was confused if Almond.js was still included, as suggested in the 'What libraries have you included?' heading (because the CHANGELOG referenced it's replacement with AMDClean.js as of the 1.7.0 build).

Simply assuming this is an oversight in the README file, and submitting the pull request to prevent further confusion by readers to the reference of Almond. This should clear things up.