Remove duplicate ca_file arg and clean up.

README.md

diff --git a/README.md b/README.md
index f8e4995..2730405 100644
--- a/README.md
+++ b/README.md
@@ -90,10 +90,6 @@
         Whether to test the GetBookingStatus endpoint.
     -booking_test
         Whether to test the CreateBooking endpoint.
-    -ca_file string
-        Absolute path to your server's Certificate Authority root cert.
-        Downloading all roots currently recommended by the Google Internet
-        Authority is a suitable alternative https://pki.google.com/roots.pem
     -cancel_all_bookings
         This option assumes that the ListBookings and UpdateBooking endpoints
         are fully functional. This is a convenience flag for purging your system
@@ -113,20 +109,30 @@
         Whether to test the UpdateBooking endpoint.
     -server_addr string
         Your http server's address in the format of host:port
-        (default "example.com:80")
+        (default "localhost:443")
     -credentials_file string
         File containing credentials for your server. Leave blank to bypass authentication.
         File should have exactly one line of the form 'username:password'.
     -ca_file string
-        Absolute path to your server's Certificate Authority root cert. Downloading all roots currently recommended by the Google Internet Authority is a suitable alternative https://pki.google.com/roots.pem. Leave blank to connect using http rather than https.
+        Absolute path to your server's Certificate Authority root cert.
+        Downloading all roots currently recommended by the Google Internet
+        Authority is a suitable alternative https://pki.google.com/roots.pem.
+        Leave blank to connect using http rather than https.
     -full_server_name string
         Fully qualified domain name. Same name used to sign CN. Only necessary if ca_file is specified and the base URL differs from the server address.
 
 Example Usage:
 
-    bin/main -health_check_test=true -check_availability_test=true
-    -output_dir="/tmp" -server_addr="http-service.google.com:50051”
-    -availability_feed="/tmp/test.json"
+    bin/main -server_addr="localhost:443" -check_availability_test=true -output_dir="/tmp" -availability_feed="/tmp/test.json"
+
+    bin/main -server_addr="external-dns:443" -all_tests=true -output_dir="/tmp" -availability_feed="/tmp/test.json"
+
+### Testing
+
+It is important that as part of testing you verify all aspects of booking server
+invocation - authentication, availability, cancellation, and rescheduling tests.
+As the final step, you must be able to execute the test utility with the flag
+-all_tests=true and it should successfully pass the entire series of tests.
 
 ### Parsing the output