Clean up the README

It's been a long time since I started this repo.

README.md

@@ -3,27 +3,35 @@
 Because we all need the most static bash we can get in this world.
 
 ## Getting
+
 Download from the Releases section or run `./build.sh`.
 
 Note that you really can't have truly static binaries on Darwin or
 Windows machines, because there are no static libraries that can be used.
+But this will ensure that Darwin or Windows bash binaries will not rely on
+anything else but their libcs.
 
 On Linux, we use musl instead of glibc to avoid `dlopen()`.
 
-## What's the point of this?
-I can run bash anywhere! Even an empty Docker container.
+## Rationale
 
-```
+This started as an experiment in Jan 2015 when Glider Labs was testing the
+viability of potentially using just a statically linked bash entrypoint
+as the only entrance into a container. So the following works:
+
+```sh
 FROM scratch
 ADD bash
 ENTRYPOINT ['/bash']
 ```
 
-And it'll just work™. Well, you'll be missing all the coreutils, so
-it'll be close to useless, but hey! It works! You could probably add busybox
-in now.
+Adding in busybox would make the container relatively feature-complete
+for debugging or just for common tools. This works great with a
+container image that has busybox (i.e `progrium/busybox`).
+
+If you're not going for purely static minimalism, you can achieve a similar
+result just by using Alpine today, also discovered during this experiment in 2015.
 
-## Sponsored by...
-> Really?
+## License
 
-But actually. [Glider Labs](http://gliderlabs.com/). Cool people.
+MIT

build.sh

@@ -1,7 +1,25 @@
 #!/bin/bash
 #
 # build static bash because we need exercises in minimalism
-# MIT licensed: google it or see robxu9.mit-license.org.
+# Copyright © 2015 Robert Xu <[email protected]>
+#
+# 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.
 #
 # For Linux, also builds musl for truly static linking if
 # musl is not installed.