Added a 'show author' option that, when selected, displays the post's/page's author with a link to to their profile page.
Merge branch 'show-author' of github.com:KurtRMueller/ultimate-posts-widget into KurtRMueller-show-author
Add "By:" label to post author
Merge branch 'KurtRMueller-show-author' into dev
add post author feature to readme