Fix spelling and grammar errors. Re-organize sections for better explanation
in the documentation. Add a section describing compilation of CXGBE with DPDK.
Add a note describing that CXGBE currently only supports binding to PF4.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>