add remixd info

src/app/tabs/settings-tab.js

@@ -53,6 +53,17 @@ function SettingsTab (container, appAPI, appEvents) {
           <span class="${css.checkboxText}">Enable Personal Mode ${warnPersonalMode}></span>
         </div>
       </div>
+      <div class="${css.info}">
+        <div class=${css.title}>Remixd</div>
+        <div class="${css.crow}">
+          Remixd is a tool which allow Remix IDE to access files located in your local computer.
+          it can also be used to setup a development environment.
+        </div>
+        <div class="${css.crow}">More infos:</div>
+        <div class="${css.crow}"><a target="_blank" href="https://github.com/ethereum/remixd"> https://github.com/ethereum/remixd</a></div>
+        <div class="${css.crow}"><a target="_blank" href="http://remix.readthedocs.io/en/latest/tutorial_remixd_filesystem.html">http://remix.readthedocs.io/en/latest/tutorial_remixd_filesystem.html</a></div>
+        <div class="${css.crow}">Installation: <pre class=${css.remixdinstallation}>npm install remixd -g</pre></div>
+      </div>
       <div class="${css.info}">
         <div class=${css.title}>Themes</div>
         <div class=${css.attention}>

src/app/tabs/styles/settings-tab-styles.js

@@ -70,6 +70,11 @@ var css = csjs`
   .icon {
     margin-right: .5em;
   }
+  .remixdinstallation {
+    padding: 3px;
+    border-radius: 2px;
+    margin-left: 5px;
+  }
 }
 `