modified Rd documentation for MCMCspec functions
modified Rd documentation for MCMCspec functions

NLMichaud/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble,nimble-dev/nimble,nxdao2000/nimble,nxdao2000/nimble,nxdao2000/nimble,NLMichaud/nimble,nxdao2000/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble