Add extremely basic README.md

Storage Performance Development Kit

===================================

[https://01.org/spdk](SPDK on 01.org)

The Storage Performance Development Kit (SPDK) provides a set of tools

and libraries for writing high performance, scalable, user-mode storage

applications.

It achieves high performance by moving all of the necessary drivers into

userspace and operating in a polled mode instead of relying on interrupts,

which avoids kernel context switches and eliminates interrupt handling

overhead.

Prerequisites

=============

To build SPDK, some dependencies must be installed.

Fedora/CentOS:

- gcc

- libpciaccess-devel

- CUnit-devel

Ubuntu/Debian:

- gcc

- libpciaccess-dev

- make

- libcunit1-dev

Additionally, DPDK is required.

See [http://dpdk.org/doc/quick-start](DPDK Quick Start).

Building

========

Once the prerequisites are installed, run 'make' within the SPDK directory

to build the SPDK libraries and examples.

    make DPDK_DIR=/path/to/dpdk