APPLEMAIL-24 Update README.md

pEpMacOSAdapter/README.md

@@ -110,6 +110,7 @@ cd [SOURCE_PATH]
 ```
 cd [SOURCE_PATH]/cryptopp
 make DCRYPTOPP_DATA_DIR=[LIBRARIES_PATH]/share/crytopp
+make dynamic DCRYPTOPP_DATA_DIR=[LIBRARIES_PATH]/share/crytopp
 make test
 ```
 3. Install
@@ -164,6 +165,11 @@ cd [SOURCE_PATH]/boost
 cd [SOURCE_PATH]
 [hg clone https://pep.foundation/dev/repos/downloadclient/
 ```
+2. Select the branch
+```
+cd downloadclient
+hg update APPLEMAIL-24
+```
 
 ### pEpMacOSAdapter