TBR: reader: more instructions for OS X

Change-Id: Ia8692bfd8ccc8f9464ef1c49376aa7ffa498ccf9
diff --git a/android/README.md b/android/README.md
index afc8d3b..422c861 100644
--- a/android/README.md
+++ b/android/README.md
@@ -14,10 +14,17 @@
 ## Building
 
 Reader Android client can be built using Android Studio.
-In order to set up the environment variables correctly, the Android Studio should be run by the following command:
+In order to set up the environment variables correctly,
+the Android Studio should be run by the following command:
+
+Linux:
 
     jiri run <path_to_android_studio>/bin/studio.sh
 
+OS X:
+
+    jiri run /Applications/Android\ Studio.app/Contents/MacOS/studio
+
 When Android Studio runs for the first time,
 select "Import project" and point to the `reader/android` directory to load the project into Android Studio.
 Once the project is loaded, the project can be built and run within Android Studio.
@@ -26,6 +33,10 @@
 
     ./gradlew :app:assembleDebug
 
+When you want to force update the dependencis, add `--refresh-dependencies` parameter to your command:
+
+    ./gradlew :app:assembleDebug --refresh-dependencies
+
 ## Running the cloud Syncbase instance
 
 To make the synchronization work properly,