Added a wrapper for oEmbedControl for usage with MVC HtmlHelper.
Updated version of the nuget package (assembly).
Refactoring: Created oEmbedApi static class. This class used both in HtmlHelperExtensions and web forms control "oEmbedControl".

Changed version of the assembly
Episerver dll references from GAC changed to nuget package Episerver.Cms.Core version 7.6.0.
Merge pull request #1 from regnars/master

oEmbedApi class created.