Add talk on Hackahton MIDX outcome

During the hackathon we plan on trying to add MIDX support in jgit,
whatever the outcome, I intend to present it as a lightning talk during
the summit.

Change-Id: Id69329dbe826552c9bfb65d74cc558cdaff082ce
diff --git a/lightning-talks/hackathon-midx-outcome.md b/lightning-talks/hackathon-midx-outcome.md
new file mode 100644
index 0000000..158df0d
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+++ b/lightning-talks/hackathon-midx-outcome.md
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+# Hackathon Outcome: Porting MIDX files to JGit
+
+During the Hackathon I'll be trying to port MultiPack Bitmap Index (MIDX)
+to the JGit codebase. Bitmap indexes are a crucial optimization for a performant
+repository, unfortunately they currently work only for a single pack-file.
+This means that, currently, other optimizations like `git exp-roll` (exponential
+roll), aren't as effective as they could be as using them will invalidate the
+current bitmap capabilities.
+
+Introducing MIDX bitmaps to the JGit codebase will enable much greater
+flexibility for SCM managers all around the world.
+
+In this talk I'll expose the progress we made during the Hackathon and outline
+the next steps to make MIDX files a reality in JGit.
+
+*[Daniele Sassoli, Senior Engineering Manager / GerritForge Inc.](../speakers.md#dsassoli)*
diff --git a/schedule.md b/schedule.md
index bc9a428..a0558f0 100644
--- a/schedule.md
+++ b/schedule.md
@@ -35,6 +35,7 @@
 | 11:00    | [Migration from Gerrit 2.13 to 3.9: Challenges and Lessons](sessions/migrating-from-2.13-to-3.9.md)              |
 | 12:30    | Lunch & Networking                                                                                               |
 | 14:15    | [Repeated Builds During Code Review: The Case of OpenStack](sessions/repeated-builds-during-code-review.md)      |
+| 15:00    | [Hackathon Outcome: Porting MIDX files to JGit](lightning-talks/hackathon-midx-outcome.md)                       |
 | 17:00    | End of the day                                                                                                   |
 
 ### Friday 11th October