Update readme for child hierarchy note

README.md

@@ -1,9 +1,12 @@
 # sfu1-binaries
 
-Binary files for sfu1 SFU, must be checked out side by side with sfu1.
+Binary files for sfu1 SFU
+When building, sfu1-binaries must be checked as a child directory of sfu1.
+
+The reason this is used as opposed to committing binaries directly into 'sfu1' is that binaries and git repos can grow in size very rapidly when changing/iterating binary files lots.
 
-The reason this is used as opposed to putting binaries directly inside of 'sfu1' is that binaries and git repos can grow in size very rapidly when changing/iterating binary files lots.
-This repo can easily be compacted by:
+
+By keeping these binaries seperate, this repo can easily be compacted by:
 
 ```bash
 rm -rf .git