Add extremely basic README.md

Change-Id: I4e41e63a075ef53a9cf93fe07dcd56a68809b73c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>

README.md

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+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