Changes to `bower.json` to support `main-bower-files`

This is necessary with some build systems that read `bower.json` such as `main-bower-files` (https://github.com/ck86/main-bower-files).
Merge pull request #15 from nt3rp/feature/support-bower-main-files

Changes to `bower.json` to support `main-bower-files`
Revert "Changes to `bower.json` to support `main-bower-files`"
Merge pull request #16 from wongatech/revert-15-feature/support-bower-main-files

Revert "Changes to `bower.json` to support `main-bower-files`"