removing built viewer from viewer dist

.gitignore

@@ -24,6 +24,7 @@ postProcessLibrary/src/**/*.js
 inspector/src/**/*.js
 serializers/src/**/*.js
 gui/src/**/*.js
+viewer/src/**/*.js
 tests/unit/**/*.js
 !tests/unit/karma.conf.js
 
@@ -169,3 +170,7 @@ localDev/src/*
 /localDev/src/index.js
 package-lock.json
 dist/preview release/package/
+
+# viewer dist files
+/Viewer/dist/viewer.js
+/Viewer/dist/viewer.min.js