update README.md

Signed-off-by: Angus Freudenberg <freudenberg.angus@gmail.com>

README.md

@@ -1,8 +1,8 @@
 # android-sync
-A command-line utility to synchronise iTunes music and other data between macOS and Android
+A shell script to synchronise iTunes music and other data between macOS and Android
 
 ## Description
-This simple shell script allows a user with a macOS computer to synchronise their iTunes library and playlists to an Android device. It is able to track changes to your lirbary and playlists such as additions and deletions.
+This simple shell script allows a user with a macOS computer to synchronise their iTunes library and playlists to an Android device. It is able to track changes to your library and playlists such as additions and deletions.
 
 ## Dependencies
 Android Debug Bridge <br />
@@ -22,11 +22,13 @@ scala-library.jar
     - Double clicking android-sync in Finder (or create an alias and place on your desktop)
 
 ## Current Limitations
-- The storage path is fixed to an external mounted device in the /storage directory. As such, this will only work with Android 6.0+<br />
-- adb-sync cannot detect music files that have been updated with lyrics<br />
-- There is currently no way to filter your library, it will synchronise every song you have in iTunes<br />
-- There are no options to filter what playlists to synchronise as itunesexport.jar exports every playlist <br />
-- This has not been tested on an unrooted Android device so I cannot comment on whether this script will work
+- By design, this script requires USB debugging enabled under Developer Options in Android Settings. There is no way around this.
+- The storage path is fixed to an external mounted device in the `/storage` directory. As such, this will only work on devices with Android 6.0 and higher.<br />
+- `adb-sync.py` cannot detect music files that have been updated with lyrics as this does not change the checksum of the files.<br />
+- There is currently no way to filter the music library, it will synchronise every song have in iTunes.<br />
+- At this stage, there is not support for playlist filtering, however `itunesexport.jar` does support it and may be implemented at a later date.<br />
+- This has not been tested on an unrooted Android device so I cannot comment on whether this script will work. However, there is no reason why it shouldn't.
+- There is no implemented function that checks if there is enough free space on an SD card, so they're may be undocumented issues if a library larger than the external storage is transferred over.
 
 ## Credits
 This utility uses the following modules: <br />