Update landing pages

README.md

@@ -51,6 +51,10 @@ If you want to temporarily turn on/off hishtory recording, you can do so via `hi
 
 To update `hishtory` to the latest version, just run `hishtory update` to transparently download and apply the latest update. 
 
+### Multi-Shell Support
+
+`hishtory` supports `zsh` and `bash`. If you'd like support for another shell (e.g. `fish`), please open an issue!
+
 ## Design
 
 The `hishtory` CLI is written in Go. It hooks into the shell in order to track information about all commands that are run (specifically in bash this is done via `trap DEBUG` and overriding `$PROMPT_COMMAND`). It takes this data and saves it in a local SQLite DB managed via [GORM](https://gorm.io/). When the user runs `hishtory query`, a SQL query is run to find matching entries in the local SQLite DB. 

backend/web/landing/www/index.html

@@ -170,6 +170,17 @@
                 </div>
               </div>
             </div>
+            <div class="card">
+              <div class="card-header" id="headingFive">
+                <h2 class="mb-0"><button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseFive"
+                aria-expanded="false" aria-controls="collapseFive">What shells does this support?</button></h2>
+              </div>
+              <div id="collapseFive" class="collapse" aria-labelledby="headingFive" data-parent="#accordionExample">
+                <div class="card-body">
+                  Currently it supports `bash` and `zsh` and will sync your history across both shells. Please open an issue on <a href="https://github.com/ddworken/hishtory">GitHub</a> if you want support for other shells. 
+                </div>
+              </div>
+            </div>
             <div class="card">
               <div class="card-header" id="headingThree">
                 <h2 class="mb-0"><button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseThree"