Fixes git-lfs#2714: Add --local option to uninstall man page

Change-Id: Ie83973ad299eb4741153bbe94a872e69963a4928
Signed-off-by: David Pursehouse <[email protected]>

Author: dpursehouse

docs/man/git-lfs-uninstall.1.ronn

@@ -12,6 +12,12 @@ Perform the following actions to remove the Git LFS configuration:
 * Remove the "lfs" clean and smudge filters from the global Git config.
 * Uninstall the Git LFS pre-push hook if run from inside a Git repository.
 
+## OPTIONS
+
+* --local:
+    Removes the "lfs" smudge and clean filters from the local repository's git
+    config, instead of the global git config (~/.gitconfig).
+
 ## SEE ALSO
 
 git-lfs-install(1).