Update README

Signed-off-by: Mahyar Koshkouei <[email protected]>

README.md

@@ -1,9 +1,36 @@
 # cmio
 
-Note that this circuit currently has critical issues that are yet to be resolved. Do not use in its current state please.
+**Note that this circuit is currently untested, as such I cannot guarantee that
+it will function correctly.**
 
-Custom Raspberry Pi Compute Module IO Board. Designed for low cost production,
-minimal set of components, and compatibility with the Raspberry Pi GPIO header.
+This is a custom Raspberry Pi Compute Module IO Board. Designed for low cost
+production, and a minimal set of components.
 
 ![Preview of the front of the PCB](https://github.com/deltabeard/cmio/raw/master/out/cmio_top.png)
 ![Preview of the back of the PCB](https://github.com/deltabeard/cmio/raw/master/out/cmio_bottom.png)
+
+Because low cost production was the main focus of the project, this Compute
+Module IO board only has a subset of features in comparison to the official
+version. However, whilst the official version costs £115, this design aims to
+produce a Compute Module IO board that can be manufactured (PCB fabrication,
+BOM, et al) under £30.
+
+This allows hobbyists an opportunity to introduce themselves to the Raspberry
+Pi Compute Module without breaking the bank.
+
+Features:
+* Low cost design.
+* Only low cost components required.
+* Micro SD card slot.
+* Composite video output (No HDMI).
+* Bank 0 and Bank 1 GPIO pins available.
+* USB On-The-Go (OTG) support.
+* Micro USB power input.
+* Fully open source (KiCad files, etc. all available) under GNU GPL3 License.
+* A most excellent **reset button**!
+
+Compatibility with the Raspberry Pi GPIO header was removed after v0.2 to
+simplify the design and reduce cost of production.
+
+\* Prices correct at the time of writing, are in Pound Sterling and include
+VAT.