Switch README content to reference-style linking

README.md

@@ -1,28 +1,48 @@
 # LibGit2Sharp
 
-**LibGit2Sharp brings all the might and speed of [libgit2](http://libgit2.github.com/), a native Git implementation, to the managed world of .Net and Mono.**
+**LibGit2Sharp brings all the might and speed of [libgit2][0], a native Git implementation, to the managed world of .Net and Mono.**
+
+ [0]: http://libgit2.github.com/
 
 ## Online resources
 
- - [NuGet package](http://nuget.org/List/Packages/LibGit2Sharp)
- - [Source code](https://github.com/libgit2/libgit2sharp/)
- - [Continuous integration](http://teamcity.codebetter.com/project.html?projectId=project127&guest=1)
+ - [NuGet package][1]
+ - [Source code][2]
+ - [Continuous integration][3]
+
+ [1]: http://nuget.org/List/Packages/LibGit2Sharp
+ [2]: https://github.com/libgit2/libgit2sharp/
+ [3]: http://teamcity.codebetter.com/project.html?projectId=project127&guest=1
 
 ## Troubleshooting and support
 
- - Usage or programming related question? Post it on [StackOverflow](http://stackoverflow.com/questions/tagged/libgit2sharp) using the tag *libgit2sharp*
- - Found a bug or missing a feature? Feed the [issue tracker](https://github.com/libgit2/libgit2sharp/issues)
- - Announcements and related miscellanea through Twitter ([@libgit2sharp](http://twitter.com/libgit2sharp))
+ - Usage or programming related question? Post it on [StackOverflow][4] using the tag *libgit2sharp*
+ - Found a bug or missing a feature? Feed the [issue tracker][5]
+ - Announcements and related miscellanea through Twitter ([@libgit2sharp][6])
+
+ [4]: http://stackoverflow.com/questions/tagged/libgit2sharp
+ [5]: https://github.com/libgit2/libgit2sharp/issues
+ [6]: http://twitter.com/libgit2sharp
 
 ## Current project build status
-The [build](http://teamcity.codebetter.com/project.html?projectId=project127&guest=1) is generously hosted and run on the [CodeBetter TeamCity](http://codebetter.com/codebetter-ci/) infrastructure
+The [build][3] is generously hosted and run on the [CodeBetter TeamCity][7] infrastructure.
 
 |  | Status of last build |
 | :------ | :------: |
-| **master** | [![master](http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt398\)/statusIcon)](http://teamcity.codebetter.com/viewType.html?buildTypeId=bt398&guest=1) |
-| **vNext (Win x86)** | [![vNext x86](http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt651\)/statusIcon)](http://teamcity.codebetter.com/viewType.html?buildTypeId=bt651&guest=1) |
-| **vNext (Win amd64)** | [![vNext amd64](http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt652\)/statusIcon)](http://teamcity.codebetter.com/viewType.html?buildTypeId=bt652&guest=1) |
-| **vNext (Mono)** | [![vNext Mono](http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt656\)/statusIcon)](http://teamcity.codebetter.com/viewType.html?buildTypeId=bt656&guest=1) |
+| **master** | [![master][8]][9] |
+| **vNext (Win x86)** | [![vNext x86][10]][11] |
+| **vNext (Win amd64)** | [![vNext amd64][12]][13] |
+| **vNext (Mono)** | [![vNext Mono][14]][15] |
+
+ [7]: http://codebetter.com/codebetter-ci/
+ [8]: http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt398\)/statusIcon
+ [9]: http://teamcity.codebetter.com/viewType.html?buildTypeId=bt398&guest=1
+ [10]: http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt651\)/statusIcon
+ [11]: http://teamcity.codebetter.com/viewType.html?buildTypeId=bt651&guest=1
+ [12]: http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt652\)/statusIcon
+ [13]: http://teamcity.codebetter.com/viewType.html?buildTypeId=bt652&guest=1
+ [14]: http://teamcity.codebetter.com/app/rest/builds/buildType:\(id:bt656\)/statusIcon
+ [15]: http://teamcity.codebetter.com/viewType.html?buildTypeId=bt656&guest=1
 
 ## Quick contributing guide
 
@@ -30,13 +50,20 @@ The [build](http://teamcity.codebetter.com/project.html?projectId=project127&gue
  - Create a topic specific branch. Add some nice feature. Do not forget the tests ;-)
  - Send a Pull Request to spread the fun!
 
-More thorough information available in the [wiki](https://github.com/libgit2/libgit2sharp/wiki).
+More thorough information available in the [wiki][16].
+
+ [16]: https://github.com/libgit2/libgit2sharp/wiki
 
 ## Authors
 
- - **Code:** The LibGit2Sharp [contributors](https://github.com/libgit2/libgit2sharp/contributors)
- - **Logo:** [Jason "blackant" Long](https://github.com/blackant)
+ - **Code:** The LibGit2Sharp [contributors][17]
+ - **Logo:** [Jason "blackant" Long][18]
+
+ [17]: https://github.com/libgit2/libgit2sharp/contributors
+ [18]: https://github.com/jasonlong
 
 ## License
 
-The MIT license (Refer to the [LICENSE.md](https://github.com/libgit2/libgit2sharp/blob/master/LICENSE.md) file)
+The MIT license (Refer to the [LICENSE.md][19] file)
+
+ [19]: https://github.com/libgit2/libgit2sharp/blob/master/LICENSE.md