Create skeleton for meta-arm layer

Add README and License Files in the root directory describing the layers
and process for interacting with the meta-arm layer.  Create the
directories for future layers (and add empty README files to force the
directories to be created by git).

Change-Id: I4d70759bf90b1c964e6d9040d145737b2f441205
Signed-off-by: Jon Mason <jon.mason@arm.com>

COPYING.MIT

+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

+Introduction
+------------
+This repository contains Arm layers for OpenEmbedded
+
+meta-arm-bsp:
+	This layer provides support for Arm reference platforms
+
+meta-arm-iota:
+	This layer provides support for Arm's IOTA Linux Distribution
+
+meta-arm-integration:
+	This layer provides support for OpenEmbedded and Yocto patches that have yet to be accepted upstream
+
+meta-arm:
+	This layer provides support for general recipes for the Arm architecture
+
+
+Contributing
+------------
+Currently, we only accept patches from the meta-arm mailing list.  For general information on how to submit a patch, please read
+https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
+
+E-mail meta-arm@lists.yoctoproject.org with patches created using this process
+
+Reporting bugs
+--------------
+E-mail meta-arm@lists.yoctoproject.org with the error encountered and the steps to reproduce the issue
+
+
+Maintainer(s)
+-------------
+* Jon Mason <jon.mason@arm.com>