add README.md

Author: sgratzl

LICENSE

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+Copyright (c) 2016, The Caleydo Team
+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 Caleydo Software 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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+LineUp.js as htmlwidget
+=======================
+
+LineUp is an interactive technique designed to create, visualize and explore rankings of items based on a set of heterogeneous attributes. 
+This is a [htmlwidget](http://www.htmlwidgets.org/) wrapper around the JavaScript library [LineUp.js](https://github.com/lineupjs). Details about the LineUp visualization technique can be found at http://lineup.caleydo.org
+
+Installation
+------------
+
+```R
+devtools::install_github("Caleydo/lineup_htmlwidget")
+library(lineup)
+```
+
+Examples
+--------
+
+```R
+lineup(mtcars)
+```
+
+```R
+lineup(iris)
+```
+