FIX BUG for widget div id.
UPDATE readme.txt and bitcoin-payments.php to 1.4

git-svn-id: https://plugins.svn.wordpress.org/bitcoin-payments/trunk@907105 b8457f37-d9ea-0310-8a92-e5e31aec5664
UPDATE readme.txt 

git-svn-id: https://plugins.svn.wordpress.org/bitcoin-payments/trunk@907108 b8457f37-d9ea-0310-8a92-e5e31aec5664