Update README and metadata with WMO and FOSS weather sources

README.md

@@ -70,6 +70,8 @@
 - **AEMET** _(requires your own API key — sign
   up [here](https://opendata.aemet.es/centrodedescargas/altaUsuario))_
 - **IMD**
+- **WMO Severe Weather Information Centre**
+- **FOSS Public Alert Server**
 - _**And more to be added**_
 
 Some sources need a free API key from the provider before you can select them — add yours from a

fastlane/metadata/android/en-US/full_description.txt

@@ -21,5 +21,7 @@
  <li><b>Met Office</b></li>
  <li><b>AEMET</b></li>
  <li><b>IMD</b></li>
+ <li><b>WMO Severe Weather Information Centre</b></li>
+ <li><b>FOSS Public Alert Server</b></li>
  <li><b>And more to be added</b></li>
 </ul>