added PHPMailer 5.4.2
send with PHPMailer

changes some settings and added a template.html to separate it from the
code. Also added option to use placeholder tags like {tagname} in the
template
Move file_get_contents inside loop

Move file_get_contents inside loop so that fresh template is loaded each time, otherwise second recipient will receive same message as first. 
Merge pull request #1 from dtbaker/patch-1

Patch 1