tweak doco

alimanfoo · alimanfoo · commit 9622569d0162 · 2017-03-01T14:17:14.000Z
diff --git a/docs/index.rst b/docs/index.rst
@@ -36,7 +36,7 @@ To disable compilation with AVX2 support regardless of the machine
 architecture::
 
     $ export DISABLE_NUMCODECS_AVX2=
-    $ pip install numcodecs
+    $ pip install -v --no-cache-dir numcodecs
 
 To work with Numcodecs source code in development, install from GitHub::
 
