document issue #177 about overriding default sort order

docs/index.html

@@ -107,9 +107,9 @@ <h3>Advanced searching</h3>
  App supports full <a href="https://en.wikipedia.org/wiki/Boolean_algebra">boolean logic</a> with negation and
  exact or wildcard search.
  It also provides handy suggestions with autocomplete.
- <br/>
+ <p/>
 
- Match types:
+ <h5>Match types</h5>
  <code class="code-block p-2 text-light rounded bg-secondary d-block">
  person:"John" # exact match <br/>
  person:(John) # wildcard match <br/>
@@ -125,7 +125,7 @@ <h3>Advanced searching</h3>
  </div>
  <div class="row feature">
  <div class="col">
- Supported keywords: <br/>
+ <h5>Supported keywords</h5>
  <code class="code-block p-2 text-light rounded bg-secondary d-block">
 
  after:2020<br/>
@@ -146,13 +146,27 @@ <h3>Advanced searching</h3>
  5-km-from:(New York) # photos 5 km from the center of New York <br/>
  any_text:"apple", # searches for apple everywhere, "any_text:" can be omitted
  </code>
- Bool expressions: <br/>
+ <p/>
+ <h5>Bool expressions</h5>
  <code class="code-block p-2 text-light rounded bg-secondary d-block">
  John and Kate # photos with "John" and "Kate" (any string match) <br/>
  John Kate # same as "John and Kate" <br/>
  John or Kate # photos with "John" or "Kate" (any string match) <br/>
  2-of:(John, Kate, Steve) # lists photos that satisfies at least 2 out of the 3 names (any string match)
  </code>
+ <p/>
+ <h5>Sort order</h5>
+ Add an empty file like <code class="code-block p-1 text-light rounded bg-secondary">.order_[ORDER].pg2conf</code>
+ to a folder to override the default sorting for that folder.
+ It's not recursively applied to subfolders.<br/>
+ Replace <code class="code-block p-1 text-light rounded bg-secondary">[ORDER]</code> in the above shown filename by one of the following values:<br/>
+ <code class="code-block p-2 text-light rounded bg-secondary d-block">
+ descending_name<br/>
+ ascending_name<br/>
+ descending_date<br/>
+ ascending_date<br/>
+ random<br/>
+ </code>
  </div>
  </div>