Update man page.

Author: bakpakin

janet.1

@@ -175,6 +175,10 @@ Disable ANSI colors in the repl. Has no effect if no repl is run.
 Open a REPL (Read Eval Print Loop) after executing all sources. By default, if Janet is called with no
 arguments, a REPL is opened.
 
+.TP
+.BR \-R
+If using the REPL, disable loading the user profile from the JANET_PROFILE environment variable.
+
 .TP
 .BR \-p
 Turn on the persistent flag. By default, when Janet is executing commands from a file and encounters an error,
@@ -221,6 +225,12 @@ find native and source code modules. If no JANET_PATH is set, Janet will look in
 the default location set at compile time.
 .RE
 
+.B JANET_PROFILE
+.RS
+Path to a profile file that the interpreter will load before entering the REPL. This profile file will
+not run for scripts, though. This behavior can be disabled with the -R option.
+.RE
+
 .B JANET_HASHSEED
 .RS
 To disable randomization of Janet's PRF on start up, one can set this variable. This can have the