Add documentation to git-blame-ignore-revs file

Signed-off-by: Stephen Finucane <stephen@that.guru>
Change-Id: I5ab5f06503b9dced613b22c5a0294ad0d3b32679

diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 3fb5fd84661a7ff86262e8028eadb6c1d417c172..388d4fd151ff9899ef06906482dbcc5256705355 100644 (file)
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,2 +1,9 @@
+# This file contains a list of revisions that the SQLAlchemy maintainers
+# consider unimportant for git blame purposes because they are pure refactoring
+# changes and unlikely to be the cause of bugs. You can configure git to use
+# this file by configuring the 'blame.ignoreRevsFile' setting. For example:
+#
+#   $ git config --local blame.ignoreRevsFile .git-blame-ignore-revs
+#
 1e1a38e7801f410f244e4bbb44ec795ae152e04e  # initial blackification
 1e278de4cc9a4181e0747640a960e80efcea1ca9  # follow up mass style changes