add docs

docs/doc.ilg

@@ -0,0 +1,6 @@
+This is makeindex, version 2.14 [02-Oct-2002] (kpathsea + Thai support).
+Scanning input file doc.idx....done (28 entries accepted, 0 rejected).
+Sorting entries....done (138 comparisons).
+Generating output file doc.ind....done (17 lines written, 0 warnings).
+Output written in doc.ind.
+Transcript written in doc.ilg.