search: add alias -S back to zero-argument help

Amends 132ada2b0ebb3751c0f8f42ca83bb257b55a50fd until we properly figure
out a way of documenting built-in aliases (or not doing that) across all
commands that currently have aliases. See #270 for full discussion.

Library/Homebrew/cmd/search.rb

@@ -1,4 +1,4 @@
-#:  * `search`:
+#:  * `search`, `-S`:
 #:    Display all locally available formulae for brewing (including tapped ones).
 #:    No online search is performed if called without arguments.
 #:

share/doc/homebrew/brew.1.html

@@ -314,7 +314,7 @@ created by <code>brew linkapps</code>.</p>
 <p>If <code>--dry-run</code> or <code>-n</code> is passed, show what would be removed, but do not
 actually remove anything.</p></dd>
 <dt><code>reinstall</code> <var>formula</var></dt><dd><p>Uninstall then install <var>formula</var></p></dd>
-<dt class="flush"><code>search</code></dt><dd><p>Display all locally available formulae for brewing (including tapped ones).
+<dt><code>search</code>, <code>-S</code></dt><dd><p>Display all locally available formulae for brewing (including tapped ones).
 No online search is performed if called without arguments.</p></dd>
 <dt><code>search</code> [<code>--desc</code>] <var>text</var>|<code>/</code><var>text</var><code>/</code></dt><dd><p>Perform a substring search of formula names for <var>text</var>. If <var>text</var> is
 surrounded with slashes, then it is interpreted as a regular expression.

share/man/man1/brew.1

@@ -426,7 +426,7 @@ If \fB\-\-dry\-run\fR or \fB\-n\fR is passed, show what would be removed, but do
 Uninstall then install \fIformula\fR
 .
 .TP
-\fBsearch\fR
+\fBsearch\fR, \fB\-S\fR
 Display all locally available formulae for brewing (including tapped ones)\. No online search is performed if called without arguments\.
 .
 .TP