Added license and readme content.

Author: yeurch

LICENSE.md

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+The CheckTree jQuery plugin is currently available for use in all personal or commercial
+projects under _both_ MIT and GPL licenses. This means that _you_ can choose the license
+that best suits your project and use it accordingly.
+
+CheckTree version 0.3 Copyright (c) 2012 JJ Geewax
+CheckTree later versions Copyright (c) 2013 Richard Fawcett
+
+## The MIT License (MIT)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and the permission notice shall be included in
+all copies or substantial portions of the Software.
+
+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
+AUTHROS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMANGES 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.
+
+
+##The GNU General Public License (GPLv3)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If no, see [http://www.gnu.org/licenses/].

README.md

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+##Overview
+
+CheckTree is a jQuery plugin, written for jQuery 1.7.0 and later, that allows you to
+easily turn a standard ordered list into a hierarchical tree that is both check-able
+and collapsable.
+
+It, like jQuery, is licensed under either the GPL or MIT license.
+
+Original project Copyright (C) 2012 JJ Geewax
+This fork Copyright (C) 2013 Richard Fawcett
+
+##Getting Started
+
+In your HTML markup, define an unordered list using the following layout:
+
+    <ul class="tree">
+      <li>
+        <input type="checkbox">
+        <label>Option 1</label>
+        <ul>
+          <li>
+            <input type="checkbox" name="ourvar" value="1a">
+            <label>Option 1A</label>
+          </li>
+          <li>
+            <input type="checkbox" name="ourvar" value="1b">
+            <label>Option 1B</label>
+          </li>
+        </ul>
+      </li>
+      <li>
+        <input type="checkbox" name="ourvar" value="2">
+        <label>Option 2</label>
+      </li>
+    </ul>
+
+After ensuring you've included a reference to the jQuery script, add the following script
+to your page.
+
+    $(function(){
+      $("ul.tree").checkTree();
+    });
+
+The script will replace the HTML checkbox controls with a `div` with class `checkbox`. It will
+also add the classes `checked` or `half_checked` to this div, depending on whether all children,
+or some children, are checked.
+
+A `div` with class `arrow` is prepended to each non-leaf-node checkbox. Such `div` elements are
+also adorned with either a `collapsed` or `expanded` class to indicate whether the node is
+collapsed or expanded.  These can be used to assign different background images in CSS.
+
+##Options
+
+The `checkTree()` function optionally accepts an object variable containing options. The
+following keys are supported:
+
+* __onExpand__ - a function which is called when a node in the tree is expanded.
+* __onCollapse__ - a function which is called when a node in the tree is collapsed.
+* __onCheck__ - a function which is called when a checkbox is ticked.
+* __onUnCheck__ - a function which is called when a checkbox is unticked.
+* __onHalfCheck__ - a function which is called when a checkbox becomes half-checked.
+* __onLabelHoverOver__ - a function which is called when a label is hovered over.
+* __onLabelHoverOut__ - a function which is called when a label is no longer being hovered over.
+* __labelAction__ - either 'expand' or 'check' - determines what happens when a label is clicked.
+