Update README.md

Author: dnozay

README.md

@@ -98,6 +98,18 @@ if __name__ == '__main__':
         failfast=False, buffer=False, catchbreak=False)
 ````
 
+### Reporting to a single file
+
+````
+if __name__ == '__main__':
+    with open('/path/to/results.xml', 'wb') as output:
+        unittest.main(
+            testRunner=xmlrunner.XMLTestRunner(output=output),
+            failfast=False, buffer=False, catchbreak=False)
+````
+
+### Doctest support
+
 The XMLTestRunner can also be used to report on docstrings style tests.
 
 ````python
@@ -135,7 +147,7 @@ TEST_RUNNER = 'xmlrunner.extra.djangotestrunner.XMLTestRunner'
 
 Also, the following settings are provided so you can fine tune the reports:
 
-**TEST_OUTPUT_VERBOSE** (Default: `1`)
+**TEST_OUTPUT_VERBOSE** (Default: `1`, choose between `0`,`1`, and `2`)
 
 Besides the XML reports generated by the test runner, a bunch of useful
 information is printed to the `sys.stderr` stream, just like the
@@ -155,6 +167,13 @@ Tells the test runner where to put the XML reports. If the directory
 couldn't be found, the test runner will try to create it before
 generate the XML files.
 
+**TEST_OUTPUT_FILE_NAME** (Default: `None`)
+
+Tells the test runner to output a single XML report with this filename
+under `os.path.join(TEST_OUTPUT_DIR, TEST_OUTPUT_FILE_NAME)`. Please note
+that for long running tests, this will keep the results in memory for
+a longer time than multiple reports, and may use up more resources.
+
 
 ## Contributing