Update binaries.

README.md

@@ -8,6 +8,25 @@ Utilities and [tilelive][1] integration for the [MBTiles][2] format.
     npm install mbtiles
 
 
+### Commandline tools
+
+Several commandline tools are included in `bin` for manipulating existing
+MBTiles files.
+
+    mbcheck [FILE]
+      Check an mbtiles for missing metadata and tiles.
+
+    mbcompact [FILE]
+      Eliminate duplicate images to reduce mbtiles filesize.
+
+    mbpipe [COMMAND] [FILE]
+      Pipe each tile to stdin of the specified command and
+      write stdout into the mbtiles file.
+
+    mbrekey [FILE]
+      Rekey a compacted mbtiles to save space.
+
+
 ### tilelive.js integration
 
 Example of using `tilelive` to serve tiles from an `mbtiles` file.