Added README file

Author: dregad

README.md

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+# Snippets plugin for MantisBT
+
+Copyright (c) 2010 - 2012  John Reese - http://noswap.com  
+Copyright (c) 2012 - 2014  MantisBT Team - [email protected]
+
+Released under the [MIT license](http://opensource.org/licenses/MIT)
+
+
+## Description
+
+Define snippets of text that can be easily pasted into text fields
+
+
+## Requirements
+
+The plugin requires [Mantis](http://www.mantisbt.org/) version 1.2.0 or higher
+and jQuery version 1.6 or later.
+
+Install the [jQuery plugin](https://github.com/mantisbt-plugins/jquery)
+before proceeding with the steps below.
+
+
+## Installation
+
+1. Download or clone a copy of the [plugin's code](https://github.com/mantisbt-plugins/snippets).
+2. Copy the plugin (the `Snippets/` directory) into your Mantis
+   installation's `plugins/` directory.
+3. While logged into your Mantis installation as an administrator, go to
+   *Manage -> Manage Plugins*.
+4. In the *Available Plugins* list, you'll find the *Snippets* plugin;
+   click the **Install** link.
+5. In the *Installed Plugins* list, click on the **Snippets** plugin to configure it.
+
+
+## Usage
+
+### Managing Snippets
+
+- Global snippets can be managed from *Manage -> Manage Plugins*.
+- User-specific snippets can be managed from *My Account -> My Snippets*.
+
+The following placeholders are supported in the Snippet's text; they will be
+replaced by the corresponding contents when inserted:
+
+ Placeholder | Description
+:-----------:|-------------------------
+%u           | your username
+%r           | the bug reporter's name
+%h           | the bug handler's name
+%p           | the project name
+
+
+### Using Snippets
+
+Each configured text field will have a selection list above it, which can be
+used to pick the desired Snippet.
+
+Once selection is made, the Snippet's text will be inserted in the field at the
+current position. If text is currently selected, the Snippet will replace the
+selection.
+
+Note that currently only the *Bug Note* field is configured to use Snippets.
+Other text fields (*Description*, *Steps To Reproduce* as well as *Additional
+Information*) can be setup to use Snippets with minimal configuration effort
+(see [this example](https://github.com/mantisbt-plugins/snippets/issues/3)).
+
+
+## Support
+
+Problems or questions dealing with use and installation should be
+directed to the [#mantisbt](irc://freenode.net/mantisbt) IRC channel
+on Freenode.
+
+The latest source code can found on
+[Github](https://github.com/mantisbt-plugins/snippets).
+
+We encourage you to submit Bug reports and enhancements requests on the
+[Github issues tracker](https://github.com/mantisbt-plugins/snippets/issues).
+If you would like to propose a patch, do not hesitate to submit a new
+[Pull Request](https://github.com/mantisbt-plugins/snippets/compare/).