Add the `extend` function to VirtualCollection
Merge pull request #31 from enov/add-extend-function

Add the `extend` function to VirtualCollection
0.4.14
Update version numbers
Update README.md
Update README.md
Set the original model  from the parent collection
Merge pull request #32 from fcsonline/master

Set the original model  from the parent collection
0.4.15
update readme
Merge pull request #1 from p3drosola/master

Update from upstream