Explicitly set the files to install.

Instead of using an ignore file, do the opposite.
Move JSHint's options to .jshintrc.
Clean up JSHint's options.
Use https for the repository URL.
Clean the whole "dist" folder.
Use the shields.io theme badge.
Use the shorter "js" for the code highlighting.
Update dependencies.
Remove multiple newlines.
Merge pull request #31 from XhmikosR/master

Minor tweaks