Update copyright year, add numerical version in from of trunk notice to avoid WordPress thinking the dev version is older than the current stable. The next major update will be version 2.0.

git-svn-id: https://plugins.svn.wordpress.org/floating-social-media-links/trunk@863389 b8457f37-d9ea-0310-8a92-e5e31aec5664
Facebook and Twitter both use https:// by default now, so always use that protocol for those links.

git-svn-id: https://plugins.svn.wordpress.org/floating-social-media-links/trunk@863393 b8457f37-d9ea-0310-8a92-e5e31aec5664