goversion: update docs

README.md

@@ -5,7 +5,7 @@ the Go version used to build that executable.
 
 Usage:
 
-    goversion [-crypto] [-v] path...
+    goversion [-crypto] [-m | -mh] [-v] path...
 
 The list of paths can be individual files or directories; if the latter,
 goversion scans all files in the directory tree, not following symlinks.
@@ -16,6 +16,12 @@ Goversion scans inside of tar or gzipped tar archives that it finds (named
 The `-crypto` flag causes goversion to print additional information about the
 crypto libraries linked into each executable.
 
+The -m flag causes goversion to print the list of modules
+found in the executable, along with version information.
+
+The -mh flag causes goversion to print the list of modules
+found in the executable, along with version and hash information.
+
 The `-v` flag causes goversion to print information about every file it
 considers.
 

main.go

@@ -18,6 +18,12 @@
 // The -crypto flag causes goversion to print additional information
 // about the crypto libraries linked into each executable.
 //
+// The -m flag causes goversion to print the list of modules
+// found in the executable, along with version information.
+//
+// The -mh flag causes goversion to print the list of modules
+// found in the executable, along with version and hash information.
+//
 // The -v flag causes goversion to print information about every
 // file it considers.
 //