Documentation updated

Documentation updated:
- preprint of SAS Global Forum 2021 article added.
- files from the live demo added.

SPF/Documentation/Paper_1079-2021/myPackage/005_lazydata/mylib.biggerdataset.sas

@@ -0,0 +1,13 @@
+/*** HELP START ***/
+/*
+`myLib.biggerDataset` data
+*/
+/*** HELP END ***/
+
+data myLib.biggerDataset;
+  do i = ., -1e6 to 1e6;
+    j = put(i, fmtNum.);
+    k = ranuni(17);
+    output;
+  end;
+run;