Added changes from Pull Request #21 to `CHANGES.mkd`
Moved the homepage to @jquery-textfill/jquery-textfill.github.io

Split away all things that are not directly related to
`jquery-textfill`'s source
Moved `tests.html` and `tests.js` to a subdirectory `unit-tests`
Moved maintainer from "Yu-Jie Lin" to "Alexandre Dantas" (as discussed on #22)
Changed homepage and description on `textfill.jquery.json`