docs: reduce CLI output and add --help options

Also restore missing -L CLI options.

Fixes #1160

doc/cli/authors.txt

@@ -1,7 +1,7 @@
 
  Remy Sharp - author and maintainer
-    http://github.com/remy
-    http://twitter.com/rem
+    https://github.com/remy
+    https://twitter.com/rem
 
  Contributors: https://github.com/remy/nodemon/graphs/contributors ❤︎
 

doc/cli/config.txt

@@ -1,6 +1,6 @@
 
   Typically the options to control nodemon are passed in via the CLI and are
-  listed under the default nodemon --help command.
+  listed under: nodemon --help options
 
   nodemon can also be configured via a local and global config file:
 

doc/cli/help.txt

@@ -8,25 +8,16 @@
   -w, --watch dir........... watch directory "dir" or files. use once for
                              each directory or file to watch.
   -i, --ignore ............. ignore specific files or directories.
-  -q, --quiet .............. minimise nodemon messages to start/stop only.
   -V, --verbose ............ show detail on what is causing restarts.
-  -I, --no-stdin ........... don't try to read from stdin.
-  -C, --on-change-only ..... execute script on change only, not startup
-  --no-colors .............. disable color output
-  --signal <signal> ........ use specified kill signal instead of default (ex. SIGTERM)
-  -d, --delay n ............ debounce restart for "n" seconds.
-  --exitcrash .............. exit on crash, allows use of nodemon with daemon
-                             tools like forever.js.
-  -v, --version ............ current nodemon version.
-  -h, --help ............... you're looking at it.
-  --help <topic> ........... help on a specific feature. Try "--help topics".
   -- <your args> ........... to tell nodemon stop slurping arguments.
 
+  More options are available under: nodemon --help options
+
   Note: if the script is omitted, nodemon will try to read "main" from
   package.json and without a nodemon.json, nodemon will monitor .js, .mjs, .coffee,
   and .litcoffee by default.
 
-  To learn more about nodemon.json config: nodemon --help config
+  For advanced nodemon configuration use nodemon.json: nodemon --help config
   See also the sample: https://github.com/remy/nodemon/wiki/Sample-nodemon.json
 
   Examples:
@@ -35,6 +26,6 @@
   $ nodemon -w ../foo server.js apparg1 apparg2
   $ nodemon --exec python app.py
   $ nodemon --exec "make build" -e "styl hbs"
-  $ nodemon app.js -- --inspect
+  $ nodemon app.js -- --config # pass config to app.js
 
-  For more details see http://github.com/remy/nodemon/
+  For more details see https://github.com/remy/nodemon/

doc/cli/options.txt

@@ -0,0 +1,34 @@
+
+Configuration
+  --config <file> .......... alternate nodemon.json config file to use
+  --exitcrash .............. exit on crash, allows nodemon to work with other watchers
+  -i, --ignore ............. ignore specific files or directories
+  --no-colors .............. disable color output
+  --signal <signal> ........ use specified kill signal instead of default (ex. SIGTERM)
+  -w, --watch dir........... watch directory "dir" or files. use once for each
+                             directory or file to watch
+
+Execution
+  -C, --on-change-only ..... execute script on change only, not startup
+  --cwd <dir> .............. change into <dir> before running the script
+  -e, --ext ................ extensions to look for, ie. "js,jade,hbs"
+  -I, --no-stdin ........... nodemon passes stdin directly to child process
+  -x, --exec app ........... execute script with "app", ie. -x "python -v"
+  -- <your args> ........... to tell nodemon stop slurping arguments
+
+Watching
+  -d, --delay n ............ debounce restart for "n" seconds
+  -L, --legacy-watch ....... use polling to watch for changes (typically needed
+                             when watching over a network/Docker)
+  -P, --polling-interval ... combined with -L, milliseconds to poll for (default 100)
+
+Information
+  --dump ................... print full debug configuration
+  -h, --help ............... default help
+  --help <topic> ........... help on a specific feature. Try "--help topics"
+  -q, --quiet .............. minimise nodemon messages to start/stop only
+  -v, --version ............ current nodemon version
+  -V, --verbose ............ show detail on what is causing restarts
+
+
+> Note that any unrecognised arguments are passed to the executing command.

doc/cli/topics.txt

@@ -1,6 +1,8 @@
 
+  options .................. show all available nodemon options
   config ................... default config options using nodemon.json
   authors .................. contributors to this project
+  logo ..................... <3
   whoami ................... I, AM, NODEMON \o/
 
-  Please contribute http://github.com/remy/nodemon/
+  Please support https://github.com/remy/nodemon/

lib/cli/parse.js

@@ -137,10 +137,6 @@ function nodemonOption(options, arg, eatNext) {
     options.quiet = true;
   } else
 
-  if (arg === '--hidden') { // TODO document this flag?
-    options.hidden = true;
-  } else
-
   if (arg === '--config') {
     options.configFile = eatNext();
   } else