Hello, appologies if this has already been discussed, couldn't find an answer.  I understand that is is expected that with Spring 15, displaying dashboards in a visualforce page will no longer work using iframe.  What is the alternative?  I'm willing to go though and update all my custom visualforce pages, but just not sure what changes I have to make.  Here is a sample of what is no longer working:

<apex:pageBlock mode="maindetail">
   <iframe src="/01Z140000016xEN?isdtp=nv" height="1020px" width="305px" style="position:relative; top:-260px;" frameborder="false"/>
</apex:pageBlock>

Thanks in advance!