Update README.txt
fix casing
Merge branch 'master' of github.com:Yoast/sociable
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