Use consistent text for AppVeyor status badges.

Author: sebright2

contrib/agent/README.md

@@ -1,6 +1,8 @@
 # OpenCensus Agent for Java
 
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus Agent for Java* collects and sends latency data about your Java process to
 OpenCensus backends such as Zipkin, Stackdriver Trace, etc. for analysis and visualization.

contrib/grpc_util/README.md

@@ -1,5 +1,7 @@
 # OpenCensus gRPC Util
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus gRPC Util for Java* is a collection of utilities for trace instrumentation when 
 working with [gRPC][grpc-url].

contrib/zpages/README.md

@@ -1,5 +1,7 @@
 # OpenCensus Z-Pages
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus Z-Pages for Java* is a collection of HTML pages to display stats and trace data and
 allows library configuration control.

exporters/trace/logging/README.md

@@ -1,5 +1,7 @@
 # OpenCensus Logging Trace Exporter
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus Logging trace exporter* is a trace exporter that logs all data to the system log.
 
@@ -52,4 +54,4 @@ public class MyMainClass {
 [appveyor-image]: https://ci.appveyor.com/api/projects/status/hxthmpkxar4jq4be/branch/master?svg=true
 [appveyor-url]: https://ci.appveyor.com/project/opencensusjavateam/opencensus-java/branch/master
 [maven-image]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-logging/badge.svg
-[maven-url]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-logging
+[maven-url]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-logging

exporters/trace/stackdriver/README.md

@@ -1,5 +1,7 @@
 # OpenCensus Stackdriver Trace Exporter
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus Stackdriver Trace Exporter* is a trace exporter that exports data to 
 Stackdriver Trace. [Stackdriver Trace][stackdriver-trace] is a distributed 

exporters/trace/zipkin/README.md

@@ -1,5 +1,7 @@
 # OpenCensus Zipkin Trace Exporter
-[![Build Status][travis-image]][travis-url] [![Build status][appveyor-image]][appveyor-url] [![Maven Central][maven-image]][maven-url]
+[![Build Status][travis-image]][travis-url]
+[![Windows Build Status][appveyor-image]][appveyor-url]
+[![Maven Central][maven-image]][maven-url]
 
 The *OpenCensus Zipkin Trace Exporter* is a trace exporter that exports
 data to Zipkin. [Zipkin](http://zipkin.io/) Zipkin is a distributed
@@ -77,4 +79,4 @@ Java 6 or above is required for using this exporter.
 [appveyor-image]: https://ci.appveyor.com/api/projects/status/hxthmpkxar4jq4be/branch/master?svg=true
 [appveyor-url]: https://ci.appveyor.com/project/opencensusjavateam/opencensus-java/branch/master
 [maven-image]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-zipkin/badge.svg
-[maven-url]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-zipkin
+[maven-url]: https://maven-badges.herokuapp.com/maven-central/io.opencensus/opencensus-exporter-trace-zipkin