README: remove windows build status until appveyor problems are fixed

Author: mckurt

README.md

@@ -13,7 +13,7 @@ variants. The QFS client tools work on OS X and Cygwin as well.
 | Ubuntu 14.04 | [![Build Status](https://travis-ci.org/quantcast/qfs.svg?branch=master)](https://travis-ci.org/quantcast/qfs)                                                         |
 | CentOS 6     | [![Build Status](https://travis-ci.org/quantcast/qfs.svg?branch=master)](https://travis-ci.org/quantcast/qfs)                                                         |
 | CentOS 7     | [![Build Status](https://travis-ci.org/quantcast/qfs.svg?branch=master)](https://travis-ci.org/quantcast/qfs)                                                         |
-| Windows      | [![Build status](https://ci.appveyor.com/api/projects/status/bqua7eyb5civ6gc8/branch/master?svg=true)](https://ci.appveyor.com/project/fsareshwala/qfs/branch/master) |
+<!--- | Windows      | [![Build status](https://ci.appveyor.com/api/projects/status/bqua7eyb5civ6gc8/branch/master?svg=true)](https://ci.appveyor.com/project/fsareshwala/qfs/branch/master) | -->
 
 The implementation details and features of QFS are discussed in detail in the
 project [wiki](https://github.com/quantcast/qfs/wiki/Introduction-To-QFS).