Abstract class for social buttons.
add phpunit config
add index.php to /tests
add .travis.yml [#78363980]
Merge pull request #1 from Yoast/stories/OR/add_php_unit

add phpunit config Finishes [#78363980]
Merge branch 'master' into social-button-class
ignore phpstorm dir
Uncommitted changes
Fixed double menu item.
Added SVG Icon for menu item
Save data set in form.
Renamed page name in URL from Sociable Settings to sociable_settings.
Display message when form is submitted.
Fixed typos
Added text field (comma separated) for social networks.
Made a start with display of sociable on the frontpage
Get social networks from database.
Removed unused code
Unit tests for create_form(), end_form() and 2 unit tests for input()
New class Yoast_Sociable for functionality that is used by frontend and backend.