Rename README to README.md

README.md

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+# MiyooCFW Buildroot
+
+The goal of this repo is to build a working root filesystem for MiyooCFW. 
+However, the filesystem it produces is quite a bit different from what MiyooCFW expects, so we're currently using a prebuilt rootfs that lives in https://github.com/MiyooCFW/sdcard
+
+The current configuration expects an external toolchain to exist in `/opt/miyoo` - download it from https://github.com/MiyooCFW/toolchain/releases or use our docker image. 
+Using an external toolchain reduces compile time quite a bit, but it can be disabled if you want to compile everything locally.
+
+## Original Buildroot Readme
+Buildroot is a simple, efficient and easy-to-use tool to generate embedded
+Linux systems through cross-compilation.
+
+The documentation can be found in docs/manual. You can generate a text
+document with 'make manual-text' and read output/docs/manual/manual.text.
+Online documentation can be found at http://buildroot.org/docs.html
+
+To build and use the buildroot stuff, do the following:
+
+1) run 'make menuconfig'
+2) select the target architecture and the packages you wish to compile
+3) run 'make'
+4) wait while it compiles
+5) find the kernel, bootloader, root filesystem, etc. in output/images
+
+You do not need to be root to build or run buildroot.  Have fun!
+
+Buildroot comes with a basic configuration for a number of boards. Run
+'make list-defconfigs' to view the list of provided configurations.
+
+Please feed suggestions, bug reports, insults, and bribes back to the
+buildroot mailing list: buildroot@buildroot.org
+You can also find us on #buildroot on Freenode IRC.
+
+If you would like to contribute patches, please read
+https://buildroot.org/manual.html#submitting-patches