README.md and LICENSE.txt added

Author: eksperimental

LICENSE.txt

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+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 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 more information, please refer to <http://unlicense.org>
+

README.md

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+# get-elixir
+Get any release of the Elixir programming language, without leaving the comfort of your command line.
+
+## About
+
+get-elixir is a shell script which aims to help people download and unpack
+the Elixir programming language from source, downloading it from the
+[released version](https://github.com/elixir-lang/elixir/releases).
+
+## Installation
+
+You can simply run from your command line
+```sh
+curl -fL -o get-elixir.sh https://raw.githubusercontent.com/eksperimental/get-elixir/master/get-elixir.sh
+chmod +x get-elixir.sh
+```
+or clone it 
+
+```sh
+git clone https://github.com/eksperimental/get-elixir
+cd get-elixir
+```
+
+## Usage
+
+```sh
+./get-elixir.sh <command> <package_type> [<version_number>] [<dest_dir>]
+```
+
+Where you can download and unpack the latest source codes released by doing:
+`./get-elixir.sh unpack source`
+
+or the latest precompiled
+`./get-elixir.sh unpack precompiled`
+
+You can also just download [any version that has been released](https://github.com/elixir-lang/elixir/releases).
+`./get-elixir.sh unpack precompiled 1.0.0 elixir-1.0.0`
+will unpack the precompiled files of v1.0.0 in the directory `elixir-1.0.0`
+
+## License
+
+Please read [LICENSE.txt] file.
+The works is unlicensed, so their are in the public domain.
+