update URL and cut out wrong info on ipv6

c-ares has had its own URL for a while and we should point
people to that. It also works with IPv6 since a long time.
diff --git a/lib/README.ares b/lib/README.ares
index 48d9cc2..d3ee24b 100644
--- a/lib/README.ares
+++ b/lib/README.ares
@@ -8,7 +8,7 @@
           ===========================================================
 
 c-ares:
-  http://daniel.haxx.se/projects/c-ares/
+  http://c-ares.haxx.se/
 
 NOTE
   The latest libcurl version requires c-ares 1.4.0 or later.
@@ -23,6 +23,7 @@
 2. cd c-ares-dir
 3. ./configure
 4. make
+5. make install
 
 Build libcurl to use c-ares in the curl source tree
 ===================================================
@@ -42,12 +43,6 @@
 1. ./configure --enable-ares=/path/to/ares/install
 2. make
 
-c-ares and ipv6
-===============
-
-If the configure script enables IPv6 support you need to explicitly disable
-that (--disable-ipv6) since c-ares isn't IPv6 compatible (yet).
-
 c-ares on win32
 ===============
 (description brought by Dominick Meglio)