Addresses issue #342 - Call VRT with minimum parameters. (#76)

* Addresses issue #342 - Call VRT with minimum parameters.

* Fixed test.

Author: suratdas

src/main/java/io/visual_regression_tracker/sdk_java/VisualRegressionTrackerConfig.java

@@ -15,15 +15,15 @@ public class VisualRegressionTrackerConfig {
     @NonNull
     private final String apiUrl;
     @NonNull
-    private final String project;
-    @NonNull
     private final String apiKey;
     @NonNull
-    private final String branchName;
+    private final String project;
     @Builder.Default
-    private Boolean enableSoftAssert = false;
+    private String branchName = null;
     @Builder.Default
     private String ciBuildId = null;
     @Builder.Default
+    private Boolean enableSoftAssert = false;
+    @Builder.Default
     private int httpTimeoutInSeconds = 10;
 }

src/test/java/io/visual_regression_tracker/sdk_java/VisualRegressionTrackerTest.java

@@ -67,8 +67,8 @@ public void setup() {
                 "733c148e-ef70-4e6d-9ae5-ab22263697cc",
                 "XHGDZDFD3GMJDNM87JKEMP0JS1G5",
                 "develop",
-                false,
                 CI_BUILD_ID,
+                false,
                 HTTP_TIMEOUT);
         vrt = new VisualRegressionTracker(config);
         vrtMocked = mock(VisualRegressionTracker.class);