doc: add 'Command Line Options' to 'View on single page'

Includes cli.markdown in all.markdown

PR-URL: https://github.com/nodejs/node/pull/6011
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>

doc/api/all.markdown

@@ -5,6 +5,7 @@
 @include buffer
 @include child_process
 @include cluster
+@include cli
 @include console
 @include crypto
 @include debugger