Install or Uninstall the Reporting Services Add-in for SharePoint (SharePoint 2010 and SharePoint 2013)
Run the installation package
Microsoft SQL Server Reporting Services Add-in for SharePoint
products (rsSharePoint.msi) on SharePoint servers to enable Reporting Services
features within a SharePoint deployment. Features include Power View, a Report
Viewer Web Part, a URL proxy endpoint, content types, and application pages so
that you can create, view, and manage reports, report models, data sources and
other report server content on a SharePoint site. The Reporting Services Add-in
for SharePoint products is a required component for a report server that runs
in SharePoint mode. The add-in can be installed from either the SQL Server 2014
setup wizard or by downloading the rsSharePoint.msi from the SQL Server 2014
feature pack
Very good article from MS.
http://msdn.microsoft.com/en-us/library/aa905871.aspx
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