Update 20th Feb 2016:
The Microsoft Dynamics CRM content pack for Power BI Preview allows you to easily access and analyze CRM data in Power BI. The content pack uses the OData feed to create a descriptive model, with all the entities and measures needed such as Accounts, Activities, Opportunities, Product, Leads, Users and more.
After you have Power BI subscription, Click Get Data on the welcome screen.
Select Microsoft Dynamics CRM and click Connect.
Make sure your popup blocker is disabled or is set to allow popups from app.powerbi.com.
Provide the OData URL associated with your account. This will be in the form “https://mytenant.crm.dynamics.com/XRMServices/2011/OrganizationData.svc ”
When prompted, provide your credentials (this step might be skipped if you are already signed in with your browser). For Authentication Method, enter oAuth2 and click Sign In:
After connecting, you’ll see a dashboard customized for a Sales Manager, populated with your own data:
For more information, see below link. Happy analyzing the data J