Added Docs

docs/faq.rst

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+Frequently Asked Questions
+==========================
+
+**1. I am receiving an error when using Connect-VIServer as below**
+
+::
+
+ WARNING: Invalid server certificate. Use Set-PowerCLIConfiguration to set the value for the InvalidCertificateAction option to Prompt if you'd like to connect once or to add a permanent exception for this server.
+ connect-viserver : 10/17/16 3:00:15 PM 	Connect-VIServer       		An error occurred while sending the request.
+ At line:1 char:1
+ connect-viserver 10.192.116.20 -User administrator@vsphere.local -Pas ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : NotSpecified: (:) [Connect-VIServer], ViError
+ FullyQualifiedErrorId : Client20_ConnectivityServiceImpl_Reconnect_Exception,VMware.VimAutomation.ViCore.Cmdlets.Commands.ConnectVIServer
+
+This error is because the certificate on your vCenter server is not trusted by the machine you are making the connection from.
+
+To fix this issue, replace the certificate chain on your machine or use the Set-PowerCLIConfiguration cmdlet to ignore certificate issues as below:
+
+::
+
+ Set-PowerCLIConfiguration -InvalidCertificateAction Ignore