Add overload for AddJsLink that takes IEnumerable

Update old AddJsLink to use the new overload instead
Remove dependency on CSV strings
Refactored Add-SPOWebPart in two separate cmdlets
filename fix
Fixed GetWebParts() to support different pages
Refactored to use OfficeDevPnP.Core
Refactored DeleteWebPart to accept server relative urls
Updated changelog
Refactored to use OfficeDevPnP.Core
Moved methods into OfficeDevPnP.Core
fixed method comments
Merge pull request #63 from erwinvanhunen/Refactoring

Refactoring
Merge pull request #61 from pbjorklund/addjslink_ienumerable

Add overload for AddJsLink that takes IEnumerable
Merge pull request #64 from sgryphon/MiscUpdates

Add site extension method to install solution packages (WSP)
Update README.md
Updated documentations
update OneDrive for Business with an app
updated Provisioning.Cloud.Async docs
fixed docs
updated docs
update cloud.sync docs