update changeloog and add readme docs

Author: dylanhitt

CHANGELOG.md

@@ -1,3 +1,7 @@
+# v2.4.0
+
+ - Add ability to test suite from a url
+
 # v2.3.0
 
  - Preserve test execution order alphabetical order

README.md

@@ -203,6 +203,9 @@ $ ./commander test /tmp/test.yaml
 # Execute a single test
 $ ./commander test /tmp/test.yaml "my test"
 
+# Execute suite from url
+$ ./commander test https://raw.githubusercontent.com/commander-cli/commander/master/integration/unix/commander_test.yaml
+
 # Execute suites within a test directory
 $ ./commander test --dir /tmp
 ```