README: reintroduce new btrfs-send-compatibility workaround

Now it appears in both the github.io and github.com feature lists.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

README.md

@@ -17,6 +17,7 @@ Strengths
  * Space-efficient hash table and matching algorithms - can use as little as 1 GB hash table per 10 TB unique data (0.1GB/TB)
  * Incremental realtime dedupe of new data using btrfs tree search
  * Works with btrfs compression - dedupe any combination of compressed and uncompressed files
+ * **NEW** [Works around `btrfs send` problems with dedupe and incremental parent shapshots](docs/options.md)
  * Works around btrfs filesystem structure to free more disk space
  * Persistent hash table for rapid restart after shutdown
  * Whole-filesystem dedupe - including snapshots

docs/index.md

@@ -17,13 +17,13 @@ Strengths
  * Space-efficient hash table and matching algorithms - can use as little as 1 GB hash table per 10 TB unique data (0.1GB/TB)
  * Incremental realtime dedupe of new data using btrfs tree search
  * Works with btrfs compression - dedupe any combination of compressed and uncompressed files
+ * **NEW** [Works around `btrfs send` problems with dedupe and incremental parent shapshots](options.md)
  * Works around btrfs filesystem structure to free more disk space
  * Persistent hash table for rapid restart after shutdown
  * Whole-filesystem dedupe - including snapshots
  * Constant hash table size - no increased RAM usage if data set becomes larger
  * Works on live data - no scheduled downtime required
  * Automatic self-throttling based on system load
- * **NEW** [Now works with `btrfs send`](options.md)
 
 Weaknesses
 ----------