Added javadoc for setProxy

Author: Harshit Vasu

src/main/java/com/browserstack/client/BrowserStackClient.java

@@ -105,7 +105,12 @@ public BrowserStackClient(String baseUrl, String username, String accessKey) {
     this.accessKey = accessKey.trim();
   }
 
-  public void setProxy(String proxyHost, int proxyPort, String proxyUsername, String proxyPassword) {
+  /**
+   * Provides configuration of proxy for http requests.
+   * Calling the method will modify the HTTP_TRANSPORT and set the requestFactory with configuration for proxy and authentication
+   */
+
+  public void setProxy(final String proxyHost, final int proxyPort, final String proxyUsername, final String proxyPassword) {
 
     if (proxyHost == null || proxyUsername == null || proxyPassword == null) {
       return;

src/main/java/com/browserstack/client/BrowserStackClientInterface.java

@@ -38,6 +38,6 @@ List<Session> getSessions(String buildId, BuildStatus status, int limit)
   List<Session> getSessions(String buildId, BuildStatus status)
       throws BuildNotFound, BrowserStackException;
 
-  void setProxy(String proxyHost, int proxyPort, String proxyUsername, String proxyPassword) throws BrowserStackException;
+  void setProxy(String proxyHost, int proxyPort, String proxyUsername, String proxyPassword);
 
 }