Update README.md

Author: ampetz

README.md

@@ -24,6 +24,9 @@ To build the test suite, type `make tests`.
 
 To build another target, type `make <target>`. Refer to the `apps` directory for the full list of targets.
 
+### Testing a Successful Install
+To test a  successful install, navigate to `apps/tests/` and run `../../build/tests`.  Running this test suite anywhere besides `apps/tests/` will result in error messages complaining about missing input files.  On success, you should see a series of outputs including hash hex strings and test results.  All results should indicate "Passed", with one notable exception:  The "Bad Signature" test should report:  "Signature Check: Failed" to correctly identify a bad signature.
+
 ### Configuration
 From the build directory, type `ccmake ..` to bring up the configuration GUI. Hovering over a variable displays some documentation at the bottom of the screen. After you make changes, press `c` then `g` to save your changes.