Update bootstrap-slider.js

[narayanjoshi]

Fix issue - When slider is part of some container and container is having scroll bars, and if we scroll the container then the slider is not behaving properly.

Pull Requests

Please accompany all pull requests with the following (where appropriate):

• [ ] unit tests (we use Jasmine 2.x.x)
• [ ] JSFiddle (or an equivalent such as CodePen, Plunker, etc) or screenshot/GIF with new feature or bug-fix
• [ ] Link to original Github issue (if this is a bug-fix)
• [ ] documentation updates to README file
• [ ] examples within /tpl/index.tpl (for new options being added)
• [ ] Passes CI-server checks (runs automated tests, JS source-code linting, etc..). To run these on your local machine, type grunt test in your Terminal within the bootstrap-slider repository directory

[narayanjoshi]

Feature is working fine but test cases are failing, hence closing the PR