Wrote DownloadVimeoCom.

The website is used to get the download URL from Vimeo.com, Smotri.com, and
Dailymotion.com.
DownloadVimeoCom: removed pattern for Dailymotion.com

There is already a plugin for Dailymotion.com.
DownloadVimeoCom: Fixed regular expression.
Merge pull request #84 from 4Christopher/stable-DownloadVimeoCom

Wrote DownloadVimeoCom.