Add README, LICENSE, and setup Travis.

.travis.yml

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+
+language: rust
+
+rust:
+  - stable
+  - beta
+  - nightly
+
+matrix:
+  allow_failures:
+    - rust: nightly
+

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2016, Spin Research
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* 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.
+
+* Neither the name of the copyright holder 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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+# merkle.rs
+
+[![Build Status](https://travis-ci.org/SpinResearch/merkle.rs.svg?branch=master&style=flat)](https://travis-ci.org/SpinResearch/merkle.rs)
+![Status](https://img.shields.io/badge/status-wip-red.svg?style=flat)
+[![Issues](http://img.shields.io/github/issues/SpinResearch/merkle.rs.svg?style=flat)](https://github.com/SpinResearch/merkle.rs/issues)
+![License](https://img.shields.io/badge/license-bsd3-brightgreen.svg?style=flat)
+
+> *merkle.rs* is a Rust implementation of a [Merkle tree](https://en.wikipedia.org/wiki/Merkle_tree).
+
+## License
+
+See [LICENSE](LICENSE).