Allow layout declaration outside ViewPager

Adds the ability (if so desired) to declare the indicator as a sibling of a ViewPager instead of enforcing that it be a direct child of the pager. This can avoid the issue seen in #23, which is still under investigation.

Thanks to @vanniktech for adding this!

Update Library Manifest

Updates the library's manifest file to exclude the default attributes for auto-backup and right-to-left support. This will prevent users from having to use tools overrides in their manifests to overwrite these settings.

See #20, #21. Thanks @artworkad for adding this!

Fix slow scrolling bug

Fixes an issue where scrolling across the ViewPager slowly prevented the indicator from updating correctly.

Special thanks to @xlf2630 for discovering this issue and submitting a fix for it!

See PR #15.

Some backwards compatibility fixes

Fixes some compatibility issues on pre-Lollipop devices.

See PRs:

• #11: API 17 ConcurrentModificationException
• #8: Usage of Lollipop+ constructor

And also:

• #5: Prevent helper class constructors accessibility.

Please be aware that as of this release, issue #9 is still outstanding for pre-Lollipop devices.

Now with a better sample app

The sample app now demonstrates basic usage of the library.

Pre-release

Initial version of the library is complete.

The following is left:

1. Improve sample app
2. Add screenshots
3. Deploy to maven or jCenter