README: Add dependency "aerotools-ng".

diff --git a/README b/README
index 0b70eaa3d8fa09f58e0bc1adf049b50058bad7eb..df50ed249c9ade65c25f5b6344003db82d8fb975 100644 (file)
--- a/README
+++ b/README
@@ -564,6 +564,14 @@ Prerequisites
     used and should be found in various implementations for hopefully all
     platforms.
 
+  * aerotools-ng (optional)
+    Used by the `aquaero' plugin. Currently, the `libaquaero5' library, which
+    is used by the `aerotools-ng' toolkit, is not compiled as a shared object
+    nor does it feature an installation routine. Therefore, you need to point
+    collectd's configure script at the source directory of the `aerotools-ng'
+    project.
+    <https://github.com/lynix/aerotools-ng>
+
   * CoreFoundation.framework and IOKit.framework (optional)
     For compiling on Darwin in general and the `apple_sensors' plugin in
     particular.