Create an Easter egg for the birthday wisdom of Mike Neale

.gitignore

@@ -123,8 +123,8 @@ man/MxBaseObjectiveMetaData-class.Rd
 man/MxCharOrList-class.Rd
 man/MxCharOrLogical-class.Rd
 man/MxCharOrNumber-class.Rd
-man/MxCompute-class.Rd
 man/mxComputeBenchmark.Rd
+man/MxCompute-class.Rd
 man/mxComputeConfidenceInterval.Rd
 man/mxComputeDefault.Rd
 man/mxComputeEM.Rd
@@ -162,6 +162,7 @@ man/MxOptionalNumeric-class.Rd
 man/MxRAMGraph-class.Rd
 man/MxRAMMetaData-class.Rd
 man/MxRAMModel-class.Rd
+man/mxRetro.Rd
 man/mxSE.Rd
 man/mxSetDefaultOptions.Rd
 man/mxSimplify2Array.Rd

DESCRIPTION.in

@@ -162,5 +162,6 @@ Collate:
     'MxTryHard.R'
     'MxSE.R'
     'MxAutoStart.R'
+    'MxRetro.R'
     'zzz.R'
 Version: @VERSION@