Add README and LICENCE.

Author: sebcrozet

LICENSE

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+Copyright (c) 2013, Sébastien Crozet
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the author nor the names of its contributors may be used
+   to endorse or promote products derived from this software without specific
+   prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+<p align="center">
+  <img src="http://nphysics.org/img/logo_salva_full.svg" alt="crates.io">
+</p>
+<p align="center">
+    <a href="https://discord.gg/vt9DJSW">
+        <img src="https://img.shields.io/discord/507548572338880513.svg?logo=discord&colorB=7289DA">
+    </a>
+    <a href="https://crates.io/crates/salva2d">
+         <img src="https://img.shields.io/crates/v/salva2d.svg?style=flat-square&label=crates.io%20(salva2d)" alt="crates.io (salva2d)">
+    </a>
+    <a href="https://crates.io/crates/salva3d">
+         <img src="https://img.shields.io/crates/v/salva3d.svg?style=flat-square&label=crates.io%20(salva3d)" alt="crates.io (salva3d)">
+    </a>
+    <a href="https://travis-ci.org/rustsim/salva">
+        <img src="https://travis-ci.org/rustsim/salva.svg?branch=master" alt="Build status">
+    </a>
+</p>
+<p align = "center">
+    <strong>
+        <a href="http://nphysics.org">Users guide</a> | <a href="http://nphysics.org/rustdoc/salva2d/index.html">2D Documentation</a> | <a href="http://nphysics.org/rustdoc/salva3d/index.html">3D Documentation</a> | <a href="https://discourse.nphysics.org">Forum</a>
+    </strong>
+</p>
+
+-----
+
+<p align = "center">
+  <i>Click one of those buttons if you wish to donate to support the development of</i> <b>salva</b>:
+</p>
+
+<p align = "center">
+<a href="https://www.patreon.com/bePatron?u=7111380" ><img src="https://c5.patreon.com/external/logo/become_a_patron_button.png" alt="Become a Patron!" /></a>
+&nbsp;&nbsp;&nbsp;&nbsp;
+<a href="https://liberapay.com/sebcrozet/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a>
+</p>

publish.sh

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+#! /bin/bash
+
+tmp=$(mktemp -d)
+
+echo "$tmp"
+
+cp -r src "$tmp"/.
+cp -r LICENSE README.md "$tmp"/.
+
+### Publish the 2D version.
+sed 's#\.\./\.\./src#src#g' build/salva2d/Cargo.toml > "$tmp"/Cargo.toml
+currdir=$(pwd)
+cd "$tmp" && cargo publish
+cd "$currdir" || exit
+
+
+### Publish the 3D version.
+sed 's#\.\./\.\./src#src#g' build/salva3d/Cargo.toml > "$tmp"/Cargo.toml
+cp -r LICENSE README.md "$tmp"/.
+cd "$tmp" && cargo publish
+
+rm -rf "$tmp"

rustfmt.toml

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+unstable_features = true
+indent_style = "Block"
+where_single_line = true