Update markdown manpages

doc/matrix-send.1.md

@@ -20,6 +20,20 @@ It works by sending a JSON request to your Matrix server. The message
 type will always be m.text, but other options may be considered in the
 future.
 
+The options are as follows:
+
+**-c**
+
+> Clear cached access tokens.
+
+**-h**
+
+> Show a help menu, then exit.
+
+**-V**
+
+> Print version and program information, then exit
+
 To begin, start by making a configuration file. This always has the location of
 *~/.config/matrix-send.conf*.
 
@@ -84,6 +98,10 @@ caches access tokens in
 If you would like to disable caching of access tokens, add NoCache to your
 *matrix-send.conf*.
 
+Encryption is not supported. All messages will be sent unencrypted.
+There are currently no plans to add encryption to
+**matrix-send**.
+
 # FILES
 
 *~/.config/matrix-send.conf*