[mirotalksfu] - Improve real-time poll UI, update readme

public/views/Room.html

@@ -1457,10 +1457,10 @@ access to use this app.
                         <br />
                         <div class="poll-btns">
                             <button type="button" id="addOptionButton" class="poll-btn">
-                                <i class="fas fa-plus"></i> Add Option
+                                <i class="fas fa-plus"></i>
                             </button>
                             <button type="button" id="delOptionButton" class="del-btn">
-                                <i class="fas fa-minus"></i> Delete Option
+                                <i class="fas fa-minus"></i>
                             </button>
                             <button type="submit" id="addPollButton" class="poll-btn">
                                 <i class="fas fa-square-poll-horizontal"></i> Create Poll