Clarify minimum git version

Related change: 632f488

Author: carlwgeorge

README.md

@@ -121,7 +121,7 @@ To https://github.com/git-lfs/git-lfs-test
    67fcf6a..47b2002  master -> master
 ```
 
-Note: Git LFS requires Git v1.8.5 or higher.
+Note: Git LFS requires at least Git 1.8.2 on Linux or 1.8.5 on macOS.
 
 ## Limitations