message: Now libindy panics when it cannot find path in EXTERNAL_STORAGE variable on android.
diff: @@ -23,7 +23,16 @@ impl EnvironmentUtils {
  }
  pub fn android_indy_client_dir_path() -> PathBuf{
  - let android_dir = env::var("EXTERNAL_STORAGE").unwrap() + "/.indy_client";
  + let external_storage= env::var("EXTERNAL_STORAGE");
  + let android_dir :String;
  + match external_storage {
  + Ok (val) => android_dir = val + "/.indy_client",
  + Err(err) => {
  + error!("Unable to find EXTERNAL_STORAGE android environment variable which holds the location to external storage file path");
  + panic!("Failed to find external storage path {:?}", err)
  + }
  + }
  +
  PathBuf::from(android_dir)
  }
  