Example to demonstrate usage of `mbed_stats_cpu_get()` API usage

Revision:
0:3114f82feb68
Child:
15:86c93f5d67c4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/README.md	Tue Jun 05 17:34:16 2018 +0100
@@ -0,0 +1,57 @@
+# Getting started with CPU Stats on Mbed OS
+
+This guide reviews the steps required to get CPU statistics on Mbed OS platform.
+
+Please install [mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli).
+
+## Import the example application
+
+From the command-line, import the example:
+
+```
+mbed import mbed-os-example-cpu-stats
+cd mbed-os-example-cpu-stats
+```
+
+### Now compile
+
+Invoke `mbed compile`, and specify the name of your platform and your favorite toolchain (`GCC_ARM`, `ARM`, `IAR`). For example, for the ARM Compiler 5:
+
+```
+mbed compile -m K64F -t ARM
+```
+
+Your PC may take a few minutes to compile your code. At the end, you see the following result:
+
+```
+[snip]
++------------------+-------+-------+------+
+| Module           | .text | .data | .bss |
++------------------+-------+-------+------+
+| [lib]\c_w.l      | 11473 |    16 |  348 |
+| [lib]\cpprt_w.l  |    36 |     0 |    0 |
+| [lib]\fz_wm.l    |    18 |     0 |    0 |
+| [lib]\m_wm.l     |    48 |     0 |    0 |
+| anon$$obj.o      |    32 |     0 | 1024 |
+| main.o           |   530 |     8 |    0 |
+| mbed-os\drivers  |   165 |     0 |    0 |
+| mbed-os\events   |  2139 |     8 | 1568 |
+| mbed-os\features |   132 |     0 |  304 |
+| mbed-os\hal      |  1910 |    34 |  128 |
+| mbed-os\platform |  3695 |   104 |  604 |
+| mbed-os\rtos     | 17302 |  2310 | 4592 |
+| mbed-os\targets  | 10707 |   112 |  324 |
+| Subtotals        | 48187 |  2592 | 8892 |
++------------------+-------+-------+------+
+Total Static RAM memory (data + bss): 11484 bytes
+Total Flash memory (text + data): 50779 bytes
+
+Image: .\BUILD\K64F\ARM\mbed-os-example-cpu-stats.bin
+
+```
+
+### Program your board
+
+1. Connect your Mbed device to the computer over USB.
+1. Copy the binary file to the Mbed device.
+1. Press the reset button to start the program.