Merge pull request #5 from jmslbam/master

Fixed notices from not correct textdomain
Update website_url.php

Fixed fatal error
Update website_url.php
Update website_url.php

Fixed title not showing
Fixed trailing URLs
Rename README.txt to README.md
Cleaned up header, some better descriptions and code clean up.
Update README.md
setup ignore for .DS_Store Mac OSx files
delete ds store
Cleanup
Fixed notices when $field[value][url] and $field[value][title] are not set