Merge pull request #262 from mjbshaw/patch-1

Document the --formatter option

lib/rouge/cli.rb

@@ -165,6 +165,10 @@ module Rouge
         yield %[                            based on --mimetype, the filename, and the]
         yield %[                            file contents.]
         yield %[]
+        yield %[--formatter|-f <opts>       specify the output formatter to use.]
+        yield %[                            If not provided, rougify will default to]
+        yield %[                            terminal256.]
+        yield %[]
         yield %[--mimetype|-m <mimetype>    specify a mimetype for lexer guessing]
         yield %[]
         yield %[--lexer-opts|-L <opts>      specify lexer options in CGI format]