Do not tell people to implement TitleProvider. Closes JakeWharton#119.

Author: JakeWharton

README.md

@@ -36,9 +36,6 @@ Usage
          TitlePageIndicator titleIndicator = (TitlePageIndicator)findViewById(R.id.titles);
          titleIndicator.setViewPager(pager);
 
-     *Note*: If you are using `TitlePageIndicator` your adapter must implement
-     `TitleProvider`.
-
   3. *(Optional)* If you use an `OnPageChangeListener` with your view pager
      you should set it in the indicator rather than on the pager directly.