Add gulp instructions to README.md

Author: jjmason

README.md

@@ -3,14 +3,25 @@
 # Testing
 
 * Install global dependencies
-
-    $ sudo npm install -g mocha coffee-script
+```
+    $ sudo npm install -g mocha coffee-script gulp
+```
 
 * Load the test data set
-
+```
     $ cd integration
     $ conjur policy load -c policy.json policy.rb
+```
+
+* Configure gulp reporting (optional)
+```
+    # To write reports to a file in xunit format
+    $ export TEST_REPORTER=xunit-file
+    $ export XUNIT_FILE=reports/report.xml
+```
 
-* Run the tests
+* Run jslint and tests
+```
+    $ gulp
+```
 
-    $ test.sh