Update readme for 1.4

Author: bentrengrove

README.md

@@ -20,8 +20,11 @@ Each [release](https://github.com/google/accompanist/releases) outlines what ver
  <tr>
   <td>Compose UI 1.2 (1.2.x)</td><td><img alt="Maven Central" src="https://img.shields.io/maven-central/v/com.google.accompanist/accompanist-permissions?versionPrefix=0.25"></td>
  </tr>
-  <tr>
-  <td>Compose UI 1.3 & 1.4 (1.3.x)</td><td><img alt="Maven Central" src="https://img.shields.io/maven-central/v/com.google.accompanist/accompanist-permissions"></td>
+ <tr>
+  <td>Compose UI 1.3 (1.3.x)</td><td><img alt="Maven Central" src="https://img.shields.io/maven-central/v/com.google.accompanist/accompanist-permissions?versionPrefix=0.28"></td>
+ </tr>
+ <tr>
+  <td>Compose UI 1.4 (1.4.x)</td><td><img alt="Maven Central" src="https://img.shields.io/maven-central/v/com.google.accompanist/accompanist-permissions"></td>
  </tr>
 </table>