scrollTop property not working as expected

[Daverine]

Your system information

• VelocityJS version: 2
• Browser: chrome
• Operating System: windows 8

Checklist

• Is this an issue with code?: [Yes/No]
• Is this an issue with documentation?: [Yes/No]
• Have you reproduced this in other browsers?: [Yes/No]
• Have you checked for updates?: [Yes/No]
• Have you checked for similar open issues?: [Yes/No]

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Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen.
animating the scrollTop using scrollTop property only work if the scrollTop position is at 0px. So if the scrollTop position have changed from 0, it can only animate back to 0. Aside from that it wont work.
Example:
// html scrollTop position is at 0px
$("html").velocity({scrollTop: 500}, {duration: 2000}) // it will work
// html scrollTop position is at 500px
$("html").velocity({scrollTop: 700}, {duration: 2000}) // it wont work
//html scrollTop position is at 500px
$("html").velocity({scrollTop: 0}, {duration: 2000}) // it will work

Steps for reproducing this issue (code):

JSFiddle example showing issue in action (code):

Go to https://jsfiddle.net/Rycochet/mqv9L27u/ - click the "Fork" button at the top, create the example and copy the new URL back here.