Update the documentation for pycdlib-explorer.

Signed-off-by: Chris Lalancette <clalancette@openrobotics.org>

Author: clalancette

man/pycdlib-explorer.1

@@ -50,6 +50,12 @@ require.
 Show the contents of the current working directory. The format of the output is:
 TYPE(F=file, D=directory) NAME.
 .TP
+.B "modify_file_in_place <iso_path> <src_filename>"
+Replace the contents of the file referred to in \fBiso_path\fR with the contents
+from \fBsrc_filename\fR.
+Warning: This command modifies the opened ISO file in-place.
+Also, the \fBsrc_filename\fR must occupy the same number of extents (2048-byte blocks) as the original file.
+.TP
 .B "mkdir <iso_path> [rr_name=<rr_name>] [joliet_path=<joliet_path>]"
 Make a new directory called \fBiso_path\fR.
 If the ISO is a Rock Ridge ISO, \fBrr_name\fR must be specified; otherwise, it must not be.

tools/pycdlib-explorer

@@ -401,7 +401,6 @@ class PyCdlibCmdLoop(cmd.Cmd):
         print('> modify_file_in_place <iso_path> <src_filename>')
         print('Replace the contents of the file within the ISO specified in <iso_path> with that of <src_filename>.')
         print('Warning: This command modifies the opened ISO file in-place.')
-        print('You must start %s with the `--read-write` flag to enable this.' % (sys.argv[0]))
         print('<src_filename> must occupy the same number of extents as the original file.')
 
     def do_modify_file_in_place(self, line):