Add partial README

README.md

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+[hub]: https://hub.docker.com/AdamAnt/busybox
+[musl]: https://www.musl-libc.org/
+[uclibc]: https://www.uclibc.org/
+
+# [adamant/busybox][hub] - A tiny image, nurtured from source
+
+This Docker base image has been custom crafted from source to provide just enough functionality in the tiniest footprint. Included in the image are the following:
+ - GNU libc6 (glibc) - _C standard library, found in most linux distributions_ | https://www.gnu.org/software/libc/
+ - Busybox - _The Swiss army-knife of linux with hundreds of common utilities_ | https://busybox.net/about.html
+ - LibreSSL - _An OpenSSL fork aiming to modernise code and improve security_ | https://www.libressl.org/
+
+Additionally, the following small utilities have been included for convenience and good container practice:
+ - su-exec - _A convenient utility for changing user and dropping privilege_ | https://github.com/ncopa/su-exec
+ - tini - _A tiny but valid `init` for containers_ | https://github.com/krallin/tini
+
+## Goals for a base image
+
+Occasionally there are opportunities where alternative standard libc implementations ([musl][musl]/[uclibc][uclibc]) won't do, like in the case of [proprietary](http://i.imgur.com/V5K7N1I.jpg) software like [Plex Media Server](https://www.plex.tv/downloads/) where only pre-compiled binaries are provided which were built against the common glibc library.
+
+(_If your use-case doesn't require glibc and you can compile the program from source, we strongly recommend you use the [Alpine Linux](https://hub.docker.com/\_/alpine) image, based on musl, which is smaller and features a full packaging system_)
+
+- The image had to be _small_, whilst still being fully functional
+- It should contain a full GNU glibc implementation to support pre-compiled binaries
+- There should be enough common system tools available, either GNU coreutils or busybox
+- Optionally a pre-installed SSL library as many applications require it