adding license and contribute files

CONTRIBUTING.md

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+## Contributing
+
+### Getting Started
+ * Submit a ticket and mention that you are working on it.
+ * Send pull requests to the `master` branch.
+ * In the pull request or the commit message, tell us which issue this is for.
+ * [Topic branches](https://github.com/dchelimsky/rspec/wiki/Topic-Branches) are encouraged but not enforced.
+ * Changes must have [unit tests](http://dev.lithify.me/lithium/wiki/standards/testing) and [updated documentation](http://dev.lithify.me/lithium/wiki/standards/documenting).
+ * Validate all existing tests and new tests are successful.
+ * Validate your new code meets lithium [coding standards](http://dev.lithify.me/lithium/wiki/standards/coding).

LICENSE.md

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+Copyright (c) 2013, brünsicke.com GmbH http://bruensicke.com/
+
+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 Dirk Brünsicke, brünsicke.com, brünsicke.com GmbH, 
+    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.