xio: Update README.xio with dependencies

Signed-off-by: Vu Pham <[email protected]>

README.xio

@@ -6,6 +6,29 @@ The Accelio XioMessenger is built conditionally only, when --enable-xio is
 provided to configure.
 
 Accelio depends on OpenFabrics verbs development headers/libraries.
+Prior to installing the Accelio package, the following prerequisites are required:
+
+RedHat (RHEL 6.4 and above)
+
+        yum groupinstall "Infiniband Support"
+        yum install libtool autoconf automake
+        yum install infiniband-diags perftest libibverbs-utils librdmacm-utils
+        yum install librdmacm-devel libibverbs-devel numactl numactl-devel libaio-devel libevent-devel
+
+
+Ubuntu (Ubuntu 13.04 and above)
+
+        apt-get install libtool autoconf automake build-essential
+        apt-get install ibverbs-utils rdmacm-utils infiniband-diags perftest
+        apt-get install librdmacm-dev libibverbs-dev numactl libnuma-dev libaio-dev libevent-dev
+
+
+MLNX_OFED
+
+        Mellanox OFED pacakage is optional and recommended
+        look for latest OFED packages at:
+        http://www.mellanox.com/page/products_dyn?product_family=26
+
 
 If either the Accelio or OFED development environments are in non-standard locations,
 include and library paths must be added to both CFLAGS and CXXFLAGS, in the Autotools